Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c68256b582e5d6b…

MALICIOUS

PDF

71.3 KB Created: 2021-02-08 23:51:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cbb98ab7044e37d879955176ca9c71f5 SHA-1: b0f09bf8788bbbcc4a07421308f6ce86c4f9045f SHA-256: 5c68256b582e5d6b882d27f43ef341d87e726fd95a494a2f0a0a5c21b93e0edc
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://baarspo.ru/wb?keyword=nutrition%20information%20fried%20chicken%20breast PDF link annotation
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/nifidusolemebejov.pdfIn PDF document text
    • https://xasigali.weebly.com/uploads/1/3/4/3/134363336/6313062.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/favuvikerun_vimozoxetebit.pdfIn PDF document text
    • http://parrrtner.xyz/voa_burmese_radio_news_morningiv1df.pdfIn PDF document text
    • http://kamini33.ru/vikologoz6ebxd.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/wewarobox.pdfIn PDF document text
    • https://begosibaluta.weebly.com/uploads/1/3/0/7/130775163/c5f5d513.pdfIn PDF document text
    • https://xupodidif.weebly.com/uploads/1/3/0/7/130739682/fedejebeji_dawalun_katoveluvow_fumorekuvemu.pdfIn PDF document text
    • https://saxeguwub.weebly.com/uploads/1/3/1/4/131406831/musibuf_zifin.pdfIn PDF document text
    • https://kukitame.weebly.com/uploads/1/3/1/3/131379641/cd8ba4.pdfIn PDF document text
    • https://fanakigefepawaf.weebly.com/uploads/1/3/0/8/130873796/3515f9066.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://senapofo.epizy.com/56111213125.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/angular_template_static_variable.pdfIn PDF document text
    • http://kikodanaso.epizy.com/tesorarobasinosisadedusi.pdfIn PDF document text
    • http://pikididubemet.epizy.com/16578260869.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_off0000d98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98D 5404 bytes
SHA-256: 8e1b6ed4d6febe4dc3206a76a2dc5eb925f48cdac27c99193bce2631f57a719d
font_01_sfnt_off0000ebc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC3 10740 bytes
SHA-256: 407e7a824c7841443b1b4bfed06008ac02f6d7cbbbcef0b2324d820586fd661b