Malicious PDF — malware analysis report

Static analysis result for SHA-256 056cc49984442ab4…

MALICIOUS

PDF

100.6 KB Created: 2021-01-21 17:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 682543c1158ad5ac2aad939b35633876 SHA-1: 56f60eab3a2754b9cfefc0896d3cb344e639bc96 SHA-256: 056cc49984442ab4e92ba063b8b275a9ff1f5806fdddb6acfccb95afd4718a66
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and includes a date. The presence of a malicious redirector strongly indicates a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=jimmy+neutron+my+son+the+hamster+transcript In PDF document text
    • https://cdn.sqhk.co/zaxuloxedu/Lihjgjh/34906965104.pdfIn PDF document text
    • https://cdn.sqhk.co/belexewuwif/99TQbeq/fezujudejevetoleregapo.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/Qjgighh/tosudojalima.pdfIn PDF document text
    • https://cdn.sqhk.co/fexejikexew/YhJQI0Q/nike_windrunner_tech_icon_texture_hoodie.pdfIn PDF document text
    • https://cdn.sqhk.co/jerowerar/duU7ihK/zinokamefigalib.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/gdwggic/zaxosaxenokefetemexun.pdfIn PDF document text
    • https://cdn.sqhk.co/xivorotil/Pgjhewj/leather_jacket_outfit_girl.pdfIn PDF document text
    • https://cdn.sqhk.co/gabamulijawe/HujbieT/quest_diagnostics_career_portal_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f91df53c5c4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_5fb6ba05a8557.pdfIn PDF document text
    • https://cdn.sqhk.co/zefipuvuwifi/IicKigv/hong_kong_golden_computer_arcade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5fd6376f92693.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fb77753b5aa1.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/d2izt5s/xejugujomilimasutowules.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423428/normal_6007a67fa3a89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_5fadcbd29b47e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413110/normal_5fbdd63d3e520.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/dTcibif/math_shortcut_tricks_for_multiplication.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420430/normal_5fc091c38e461.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
    • 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_off000141e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E8 5112 bytes
SHA-256: 530dabdd0546996d723e6414ac97e19ca9f7c7e52effacd290cf1dcd4b3d4eed
font_01_sfnt_off00015316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15316 10564 bytes
SHA-256: fc5c057682e5b2e351a3018941db33cbee24844f2397ccac004853cadad95d34
font_02_sfnt_off000176c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176C4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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