Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd378e53a2ff76ba…

MALICIOUS

PDF

72.4 KB Created: 2021-02-15 07:24:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c7252b04df28cf5261d33240745b9688 SHA-1: 133b50eb6e29780a99b1051d02330e2eee91782b SHA-256: fd378e53a2ff76ba3606fcf23061ed3471d2e348d90d9e477458c3062ad98f17
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://jottigo.ru/aws?utm_term=whatsapp++for+laptop+windows+vista+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386089/normal_5ff041eb6535b.pdfIn PDF document text
    • https://lupagizan.weebly.com/uploads/1/3/1/6/131637074/ddd1c84e37fd.pdfIn PDF document text
    • https://tematurulabi.weebly.com/uploads/1/3/1/6/131606540/293d7a99e1.pdfIn PDF document text
    • https://bumarotijij.weebly.com/uploads/1/3/4/6/134688095/1623717.pdfIn PDF document text
    • https://labomozojaxige.weebly.com/uploads/1/3/0/7/130738499/lepiwosofejol-nodoviz-vaxapikexor.pdfIn PDF document text
    • https://gumakini.weebly.com/uploads/1/3/1/4/131414358/liliwakasoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480889/normal_5fd119f1549f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469634/normal_5fdb63bf50426.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445888/normal_5feda2d63ce2e.pdfIn PDF document text
    • http://sodaapp.pro/796010074961uetr.pdfIn PDF document text
    • https://zudejafig.weebly.com/uploads/1/3/2/6/132681624/dedofugofa-xunubakut.pdfIn PDF document text
    • https://xumefuzodagugud.weebly.com/uploads/1/3/1/3/131384373/medekoxej-sonixififarose-xerawibakamo-zuxusakebojofa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420764/normal_5fd22b1f9fc06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/didufivowata.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/3d_effect_photo_editor_software_free.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_off0000de9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 5296 bytes
SHA-256: c58e93259e258d39f639466f128ce28b120d6bdaf75fd08202098c975263be80
font_01_sfnt_off0000f0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BA 10516 bytes
SHA-256: bf01464046805fb2025e169ca7f50947b59352b64656cea61a5b8b093bd0859b