Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f4d6286e8bc3c7…

MALICIOUS

PDF

75.2 KB Created: 2021-03-22 01:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d55915087c383c5d92747be5b3b848fb SHA-1: b0fffc9788c1004ef06c6aa95c9ed5e7dd9e0e26 SHA-256: 22f4d6286e8bc3c7fff617d564f4e8661a89c9e8bf40dff318fa00207114d720
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious websites for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/strik?utm_term=how+much+does+paige+vanzant+make+per+fight PDF link annotation
    • http://good-production11.site/309114041976bh6n.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefulurifu/hchdjg1/ncis_episode_guide_season_13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372963/normal_5fdfdd1fdb1d8.pdfIn PDF document text
    • https://fakavenudir.weebly.com/uploads/1/3/4/0/134042443/b57d72b68d.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/8679272.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/jagjUzo/garovixu.pdfIn PDF document text
    • http://wirelessinfo.ru/954092101167fstw.pdfIn PDF document text
    • https://zopupafi.weebly.com/uploads/1/3/1/4/131454349/04b1bcea15.pdfIn PDF document text
    • http://idealslim-ordina.site/fetevuxeteluzelo948u7.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxaletadi/0iieRQT/zusifuluwisekixolasu.pdfIn PDF document text
    • https://vunulenib.weebly.com/uploads/1/3/2/3/132303041/fapozuxugap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407989/normal_605338b8ce4e0.pdfIn PDF document text
    • http://interbankdigital.com/333625147871d4e8.pdfIn PDF document text
    • https://bosubunu.weebly.com/uploads/1/3/4/6/134693877/fugovonisu.pdfIn PDF document text
    • http://itayoga.space/the_chaser_full_movie_dual_audioli78g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418746/normal_5fe1240ec0c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_6040e2687cae9.pdfIn PDF document text
    • http://toportt.online/sozupitemirarepk9mf3.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/HpXvifa/3484147889.pdfIn PDF document text
    • http://tehnoprom.org/dimensionamiento_de_columnasarmk6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2b01876c-5741-4e94-bfb6-30973e4a6517.filesusr.com/ugd/45d688_7ac4806b19e74d728da6854461b4ecf0.pdf?index=trueIn PDF document text
    • https://a8a70d16-e3f0-4805-b115-4d8c62c40b57.filesusr.com/ugd/82e28d_b3fb39b5983045438923e6fbd2894115.pdf?index=trueIn 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_off0000e5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D2 5764 bytes
SHA-256: 7da906c9ccc24b583bf07770dd62e2dacf33644e65da45d369c96ad34674e0f5
font_01_sfnt_off0000f96f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96F 11120 bytes
SHA-256: 4c4e4c3b5a546b0a1c841739dff34daa039f18aec768a7bdffeae5b345d0333a

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