Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f865a893f4ae155…

MALICIOUS

PDF

72.9 KB Created: 2021-02-03 05:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c2feb8e27bf3b6a920c3948848f7d832 SHA-1: 39a9bad0ee574cad50401ee61507b53a1c34a429 SHA-256: 9f865a893f4ae155413b6542851180cf6fde4f8d39a76ddca58627a5942abb65
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://jottigo.ru/wb?keyword=formation%20pour%20administration%20des%20ventes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5fd658618f8b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_5fd67e4c6219a.pdfIn PDF document text
    • https://nolujamikudaze.weebly.com/uploads/1/3/4/8/134868466/3131483.pdfIn PDF document text
    • https://razivizufizide.weebly.com/uploads/1/3/4/5/134525322/1765199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_5fe7132a817c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473656/normal_5fda2b8150d1a.pdfIn PDF document text
    • https://mazazujusuvazix.weebly.com/uploads/1/3/1/8/131856432/ca3a0de1aaed4a.pdfIn PDF document text
    • http://volosaty100.xyz/whatsapp_messenger_free_download_for_windows_xp_pc4ufxc.pdfIn PDF document text
    • https://revunisukigi.weebly.com/uploads/1/3/4/8/134849871/dadewofeg-lojubukifef-korapepavopigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454167/normal_5fd1791ea4dfa.pdfIn PDF document text
    • https://dasatupulike.weebly.com/uploads/1/3/4/1/134131314/bujabedosuxigujeme.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/jutenojamega/amman_hd_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/answer_key_chemistry_2019_gseb.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/good_afternoon_in_french_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/spyder_python_3._6_windows_7.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_off0000de20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE20 5088 bytes
SHA-256: 3a96f66632282e07efbb1a15060841f2342179dbe9c618f99f26accf989aebfa
font_01_sfnt_off0000ef5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF5A 11896 bytes
SHA-256: 72439ddf3ac2bcb12d7cafc640f335e12cdc05d4ffec52285f9bec1d44b42247