Malicious PDF — malware analysis report

Static analysis result for SHA-256 6668270009b453a6…

MALICIOUS

PDF

111.8 KB Created: 2021-07-19 13:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 04178193597e9208b16f9ef6124d5772 SHA-1: 176dbb5d2ca530d3bad5a0544194f199152ef40c SHA-256: 6668270009b453a67229a6c49800139718105d8a790058e0ae5e2038f02fce43
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with many URLs pointing to compromised WordPress upload directories and disposable hosting, suggesting an attempt to distribute phishing content or malware. The PDF itself contains no readable content, only obfuscated data and links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://webshopplus.nl/app/webroot/files/userfiles/files/sunekudususimaso.pdf In PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5389e874b---rimimukuzagatogatiwag.pdfIn PDF document text
    • http://kirilmazbardak.com/userfiles/file/17515995222.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075dd2d8739d---49257901852.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/zadefiluwo.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/653c78ade2d1fd351f366f925224d266/41325693022.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/v4nbp28l80r4h01fe392d71c6s/1874978912.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/xotanupotepejosajisa.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a79f064d73---20915013272.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6dc98c934.pdfIn PDF document text
    • http://tfh-filter.hu/_user/file/vixebon.pdfIn PDF document text
    • http://ip-golubev.ru/ckfinder/userfiles/files/xaxexumimekegoveratowad.pdfIn PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608500566dd14---muzoxexarizijizupubawun.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/mr38ks8pdehpreupjovtg002sp/72657270238.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c121c68b4ef---92582665345.pdfIn PDF document text
    • https://arbormaster.net/uploads/files/pibedo.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7cf3b52808---12574079277.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/miqasnb1mn0smkc00399a45es4/zavizuvirusaduso.pdfIn PDF document text
    • http://theettiares.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/jipomalelerinidis.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/ebe792f155d9b9e5b6f6e072cd49cbc6/mibutugiwobojuxukakudamof.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/somelakuzi.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/79def61d20907f67c875c98a15b6252f/mixixififudoxez.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/6943642025.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/2kff6k5qseqi8tcdic62u88qv9/wixukanutajugadixef.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/788b3c70a8aeb11e66499630dfbb3966/verefeve.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/rozasaponofetodenuxolepu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=grade+8+social+textbook+our+worldviews+pdf+chapter+1PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000132b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B1 16180 bytes
SHA-256: e7368c92810a168bb2a618214b723abc7d6e635c134ef02c605c600f2592563b
font_01_sfnt_off0001485a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1485A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001606c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1606C 20140 bytes
SHA-256: 74b2e25bce389aa248bb55acf4be300b9c310a8b0ecc5909a18e3749f7d6deee
font_03_sfnt_off0001955c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1955C 11500 bytes
SHA-256: f070460e6ebdc314319c313bd88fdf9f195e88ec91ee82acca67f56bef4422f8

Open this report in the interactive analyzer, or submit your own file for analysis.