Malicious PDF — malware analysis report

Static analysis result for SHA-256 6321180901a1ef8e…

MALICIOUS

PDF

71.0 KB Created: 2021-09-25 21:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 302dc1614f07fd799861f9beff3cce13 SHA-1: 9c1f0c6971ed2eac7d089c967c34fb1d8dcd28b6 SHA-256: 6321180901a1ef8ed4187a1527407a9893a0abb83412ffd33d5ea38c015e45bf
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests a lure to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://huntic.ru/uplcv?utm_term=pdf+to+word+best PDF link annotation
    • http://siamsnail.com/media/userfiles/files/42226078206.pdfIn PDF document text
    • http://insureavisitor.com/userfiles/file/gosititafelokazuxamesuz.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/45866113321.pdfIn PDF document text
    • http://benedictinoselrosal.org/ckfinder/userfiles/files/katulafu.pdfIn PDF document text
    • https://1tlstar.com/storage/uploads/files/gotep.pdfIn PDF document text
    • http://fratellilongoni.com/userfiles/files/74461735243.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/97907c27dd15bb1fb2acddafeb70d86b/kadovipapobowa.pdfIn PDF document text
    • http://lctrading-gmbh.com/ckfinder/userfiles/files/93659371049.pdfIn PDF document text
    • https://lecormier-menuiserie.com/www/upload/files/81951666933.pdfIn PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/dimogisuvofujamujonal.pdfIn PDF document text
    • http://sententtech.com/file_media/file_image/file/81726648752.pdfIn PDF document text
    • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/42716236968.pdfIn PDF document text
    • https://hotnewsmd.deca.md/upload/userfiles/files/95824292529.pdfIn PDF document text
    • http://zhizhencn.com/filespath/files/20210913101514.pdfIn PDF document text
    • https://slide-bearing.com/d/files/potixifonezukak.pdfIn PDF document text
    • https://adetexfoamgroup.centralcms.cloud/galeria/files/88394650977.pdfIn PDF document text
    • http://korio-olsztyn.pl/userfiles/file/77612688300.pdfIn PDF document text
    • http://tahyuh.com/uploads/files/202109131321217813.pdfIn PDF document text
    • https://bangprice.com/bangprice.com/beta/cms_image/file/gexenarolebokuderun.pdfIn PDF document text
    • http://police8coop.com/UserFiles/file/40998558394.pdfIn PDF document text
    • http://kustari.net/userfiles/file/2763169556.pdfIn PDF document text
    • http://vinczeandlaszlo.com/upload/15505360341.pdfIn PDF document text
    • https://www.meditech.cz/ckfinder/userfiles/files/xadubomujoxugifegodevuke.pdfIn PDF document text
    • https://quanghuydulich.vn/img_duhoc/files/10897729784.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/gemusafuwotevamolavi.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB23D 10172 bytes
SHA-256: 7f823759aa0118c5f245ec45ec33e771f0697adf17ef59894c66aa9ae5181bd2
font_01_sfnt_off0000c935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC935 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE147 17908 bytes
SHA-256: f0c90fb24685de1fdb612f6559ab39537894c14bd89199d6fafc011366876024

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