Malicious PDF — malware analysis report

Static analysis result for SHA-256 7074c0085e27e73d…

MALICIOUS

PDF

72.9 KB Created: 2021-02-17 11:39:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f8c9349db29b6982f282ed9746cf49bf SHA-1: 141b653c102cf05c47490264c5a41ba6a8b03597 SHA-256: 7074c0085e27e73da09681c52888ca83e94d04b70c6a1fa96a32cf898875a54e
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jacksth.ru/wix?keyword=aspe+domestic+hot+water+heating+design+manual PDF link annotation
    • http://gta-msk.ru/aqa_a_level_economics_revision_guideo4sim.pdfIn PDF document text
    • http://lisolu.org/empires_and_allies_unlimited_gold_apk_downloadqbq13.pdfIn PDF document text
    • https://cdn.sqhk.co/janogoxuke/ggdujck/woodworker_s_journal_downloadable_plans.pdfIn PDF document text
    • https://bisojobiregabo.weebly.com/uploads/1/3/4/5/134509607/nevireboxi.pdfIn PDF document text
    • http://lnstagram-support.live/rules_for_adding_ing_to_verbs_worksheet8bnek.pdfIn PDF document text
    • http://chaptejvxz.fun/58941119065cot02.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/ihcgihe/taliwawet.pdfIn PDF document text
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/suxujik_bowoside.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/c0nMVjh/jidepuke.pdfIn PDF document text
    • http://euromarket.pro/sedodovosisoxarorujibobunwk3t.pdfIn PDF document text
    • https://cdn.sqhk.co/vixonafom/Jl5jgck/34901511693.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412575/normal_6007fe95a6741.pdfIn PDF document text
    • https://sejexogubason.weebly.com/uploads/1/3/1/0/131070030/cf6df7e878.pdfIn PDF document text
    • http://pay-order.info/snowflake_stock_ipo_date_and_pricefoyck.pdfIn PDF document text
    • https://bevifosadorafot.weebly.com/uploads/1/3/1/8/131856546/sowiter.pdfIn PDF document text
    • http://idealslimitaly.site/chemotherapy_induced_neutropenia_treatment_guidelineso5lo6.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/debamijizozexo/apologia_pro_vita_sua_espaol.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_off0000e04c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04C 5568 bytes
SHA-256: e146fceca667c5b51d0c119479e00e96a4066ee8f3e9eb9e0a35dc4db91769b9
font_01_sfnt_off0000f322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF322 10264 bytes
SHA-256: 04358c455d506c6ce73fed44cc3f929d08f2fcb7d446243fe128409a25beab48

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