Malicious PDF — malware analysis report

Static analysis result for SHA-256 db407f30a73f22f0…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 18:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e5ed76cba7f6c6bfafb06d6271d1b1cf SHA-1: caa3345049b360e51824980dbc55dbe291f07fb4 SHA-256: db407f30a73f22f0e4f7f10afb3db0d66e19e76a1668078bd9424fff1f1b840e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=texas+studies+weekly+week+22+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369776/normal_6025b07b43fc9.pdfIn PDF document text
    • http://hh666o.site/144803159875pbna.pdfIn PDF document text
    • http://iciapp.xyz/why_is_light_flickering_when_offoiaet.pdfIn PDF document text
    • https://rafopovuweke.weebly.com/uploads/1/3/2/7/132740485/2890d7.pdfIn PDF document text
    • http://onlinetyz.xyz/is_prostitution_legal_in_nevada_usahwe4x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454426/normal_5fcf2bd506a97.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/11067228780.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5fdbe489afbab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuwizovoxix.rf.gd/tere_ishq_ki_chadar_song.pdfIn PDF document text
    • http://ralomefin.epizy.com/tidasamaf.pdfIn PDF document text
    • http://dokused.epizy.com/how_long_does_it_take_for_new_glasses_to_come_in.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/tifomukixew.pdfIn PDF document text
    • http://kasazupolixugi.epizy.com/64361243112.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_off0000deeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEB 5228 bytes
SHA-256: 3197af702e8cd16a51fd70895b58ec04b1290b7f9372e3aa467ea55a1dc3d642
font_01_sfnt_off0000f0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DF 10504 bytes
SHA-256: bcfaedff8d7630f331d5df420f873274ee64a66e063ecd988cde58cece9cab04