Malicious PDF — malware analysis report

Static analysis result for SHA-256 982dcd2801a282fe…

MALICIOUS

PDF

75.5 KB Created: 2021-05-24 06:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: acd6f63f8b1ab5112eca5739cb93a5ce SHA-1: 449e4717f9596eb03b0300b0f580a4d98bd87651 SHA-256: 982dcd2801a282fe5367e44f18151d200702807038d1042f2bb1c6d7e5acf78e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one critical heuristic identifying a 'PDF_SEO_LINK_FARM' pointing to a suspicious URL. Another heuristic flags a general external URI, and ClamAV detects it as 'Pdf.Phishing.Trojan'. The presence of a download button lure further supports a malicious intent, likely to redirect users to a phishing or malware distribution site.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/strik?utm_term=is+totally+accurate+battle+simulator+free+on+mac PDF link annotation
    • https://dapalaboz.weebly.com/uploads/1/3/0/8/130874192/e5cbfb858.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/5a4548d58e0e25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374847/normal_5fcd77507ca1a.pdfIn PDF document text
    • https://nodigikoj.weebly.com/uploads/1/3/4/3/134384892/9cbe10f54cbd.pdfIn PDF document text
    • https://digexuvin.weebly.com/uploads/1/3/2/8/132814990/xagejutotoj-ginozipuf-dobux-zamab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_604f1164343b4.pdfIn PDF document text
    • https://jozifopavix.weebly.com/uploads/1/3/4/3/134355896/663f70c3d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5fd9b715ea6ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422884/normal_606ca9c061e74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483337/normal_602d82647a68d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wujanozo/xipaz.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/ielts_writing_practice_material.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/26954106408.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/website_templates_bootstrap_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/61111636840.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/my_talking_angela_now.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/non-_degenerate_bilinear_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/mifizosilajizeluk.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/acuerdo_escazu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AD 5088 bytes
SHA-256: 6cef855c16e6e883e2c240d5f410cb557ed420854c279484364b9e6b22085dfe
font_01_sfnt_off0000e9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DC 11928 bytes
SHA-256: 7d779069459b11e7f7f3a564a5062b23554d6d9865a5e686678dcdb2f078487a
font_02_sfnt_off00011283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11283 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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