Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0b82bd14633588…

MALICIOUS

PDF

80.4 KB Created: 2021-02-25 20:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e6c9592735960de123e84f21b977ae36 SHA-1: 4b11fcd2e8e1f788c6dc1db1f36d1a795040c2e5 SHA-256: 1d0b82bd14633588832a3d3f2a67f7d480cca754987e9ebe948e1b29db716a28
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://crophysi.ru/strik?utm_term=is+hagrid+a+real+name PDF link annotation
    • https://teraludejos.weebly.com/uploads/1/3/5/3/135304334/wubawomisitepi.pdfIn PDF document text
    • https://boferisavupase.weebly.com/uploads/1/3/1/3/131384298/1c1c5ac167dceb9.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/wirarovusekix.pdfIn PDF document text
    • http://coins24h.com/457277406881z5vq.pdfIn PDF document text
    • https://pudoxarunisit.weebly.com/uploads/1/3/1/1/131164251/9588165.pdfIn PDF document text
    • https://kuruxeronujupo.weebly.com/uploads/1/3/4/4/134477992/banukite.pdfIn PDF document text
    • https://merogowaxoku.weebly.com/uploads/1/3/1/0/131069891/fedelesuzetidasige.pdfIn PDF document text
    • https://wivaralizufijol.weebly.com/uploads/1/3/1/4/131483386/xagonewivunigak-wezeki-bemowotafunoka-zatijubibu.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/kevexoborikadan.pdfIn PDF document text
    • https://kexanitafax.weebly.com/uploads/1/3/0/8/130813084/8241152.pdfIn PDF document text
    • http://triple-doska4.club/33900868497768e7.pdfIn PDF document text
    • http://vulgargirls.fun/counter_strike_condition_zero_maps_freery4uf.pdfIn PDF document text
    • https://sopunarexij.weebly.com/uploads/1/3/1/8/131857112/2694a25555eb8b5.pdfIn PDF document text
    • https://rebejudan.weebly.com/uploads/1/3/5/3/135316845/6753659.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/zaxefemebidaz/anormal_significado.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/my_magic_chef_ice_maker_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/medan_indonesia_travel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/29958046393.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/tapolinad.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_off0000f226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF226 4776 bytes
SHA-256: 32aa696749744469811b09c032991260e5670476a47b629177c0ad91e37835e6
font_01_sfnt_off00010209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 10572 bytes
SHA-256: 541460697d41685b1a588e626632799dbf70f279001016c84cde7cc4f8bb3d4e
font_02_sfnt_off00012633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12633 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34