Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d6fd982d778e83f…

MALICIOUS

PDF

72.0 KB Created: 2021-02-15 06:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: acaa8dec246726825d9d72479ecbb21d SHA-1: 820f3de3f2d826e6210a59b61061c0cb523e3573 SHA-256: 2d6fd982d778e83f47aa71ca2bd7a23202575d03c3e62fa6459cf2f13b4fe355
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=animal+jam+play+wild+unblocked PDF link annotation
    • https://cdn.sqhk.co/vovewotutal/kiai1FB/47878421728.pdfIn PDF document text
    • https://bopisigo.weebly.com/uploads/1/3/1/4/131453919/lijewufiparib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460058/normal_60208f3561474.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_6017211f0e1bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416787/normal_6008959b940d6.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxarufodir/H1jiMib/zowawasokipuribenefolime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454168/normal_5febed7b69822.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/xLghRjd/62443013611.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/b9ae12d72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409798/normal_5fc714d438f4f.pdfIn PDF document text
    • https://jinikegubu.weebly.com/uploads/1/3/4/8/134873825/vepubigoparuzuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414167/normal_5fcfadf66777e.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/d7d82.pdfIn PDF document text
    • https://nedidibizexoba.weebly.com/uploads/1/3/0/9/130969065/8355977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419193/normal_60290130d4508.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puwomuf.rf.gd/gidipafotapu.pdfIn PDF document text
    • http://wabipoxagapez.rf.gd/benediction_ft_rick_ross.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC9 5408 bytes
SHA-256: 36901e07916e6dbc0e51d12195507d42d57dde4826225b345a792e4b004ab301
font_01_sfnt_off0000ed35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED35 11340 bytes
SHA-256: 767f5c29174252eead30e50c64ad8e9a95e5bbf5d0a845ce7f6acc1637710480