Malicious PDF — malware analysis report

Static analysis result for SHA-256 746ef0be48c1a845…

MALICIOUS

PDF

86.5 KB Created: 2021-09-04 03:24:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 039da8b7e0df030a7aa732811b7ddf9a SHA-1: b85fc3d8f1badded32701e4c8a359031ac7330f8 SHA-256: 746ef0be48c1a845784a4779e517bd470e77500023f508ee49a615664c433647
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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 http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2801a1310---28171630723.pdf In PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/2dcba83483aa839cbc33fc53df06297b/dorasujalagagukuzatiso.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/2e91f77e16666aeeabea26df0dab1cc0/65798594994.pdfIn PDF document text
    • http://toyotarent.hk/FileData/ckfinder/files/20210722_5E5EBC0CFE8B2C37.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/31962311670.pdfIn PDF document text
    • http://tatishev.ru/admin/ckfinder/userfiles/files/ketijusadopuwomi.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/306cf9a7b8b41fe0d1819460504fc0c0/wofadi.pdfIn PDF document text
    • https://pirkitpadangas.lt/ckfinder/userfiles/files/pazagefegefanupixidoruro.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8bd17471ec---buwegabuvedilexesafif.pdfIn PDF document text
    • http://vita24h.com/uploads/userfiles/file/54232581234.pdfIn PDF document text
    • http://khmim.com/ckfinder/userfiles/files/80889797489.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087dcdf6280c---18267446485.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/o1o250bq640ppd1u985i6hodd3/58998718998.pdfIn PDF document text
    • http://angel-conference.org/upload_fck/file/2021-8-18/20210818015853900585.pdfIn PDF document text
    • http://tootingtaxi.com/survey/userfiles/files/kugijaritamagexa.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/dd27097073baba35aa6ead8a02702326/luzasolonobedufapuvudaj.pdfIn PDF document text
    • https://mollis.rs/files/66014447326.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a6c676f2b---60465945444.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/88675865413.pdfIn PDF document text
    • https://pmapmc.com/userfiles/image/files/dafidifufa.pdfIn PDF document text
    • http://jar-ted.pl/file/76912162919.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968e24aa7eb---77673732298.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/fepofaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=vishnu+sahasranamavali+kannada+pdfPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC496 16164 bytes
SHA-256: 4fdc94c85a11daa22043ad9212e2146c321904e83e537154f1acb124446281a0
font_01_sfnt_off0000da34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA34 21672 bytes
SHA-256: 48877ae2e5323e6ad8b025f44e9ab2bdc505ea0d671cc612cb968f6d559509c6
font_02_sfnt_off0001122b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122B 1964 bytes
SHA-256: cb83427253be486b5dc35224710cea1d2a27078ad6da64da340d8beb93dbb3aa
font_03_sfnt_off00011b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B44 10640 bytes
SHA-256: f1b9262b47dd104d8eb957f56ac9128416761849f1738b817cda86846bc0dd53
font_04_sfnt_off00013354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13354 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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