Malicious PDF — malware analysis report

Static analysis result for SHA-256 97cc1fac5b33cefc…

MALICIOUS

PDF

99.8 KB Created: 2021-03-14 17:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 2b79614a26f9315461a00b21b43c4d0c SHA-1: 14e62f4e3174e85d57e546e72b8874357854676e SHA-256: 97cc1fac5b33cefc7e0957aa39cdfdef89142063667d2f3251f1955042e87515
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs, such as 'https://lozipotod.ru/strik?utm_term=how+to+reset+pioneer+receiver+vsx+522', indicate a potential phishing or scam attempt, possibly disguised as helpful content.

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 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://lozipotod.ru/strik?utm_term=how+to+reset+pioneer+receiver+vsx+522 PDF link annotation
    • https://cdn.sqhk.co/levowexesu/Fjfihha/wegelofosetotibodozom.pdfIn PDF document text
    • https://cdn.sqhk.co/pamezuravuno/fiiYigH/91267934234.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/giajegc/40217651862.pdfIn PDF document text
    • https://cdn.sqhk.co/biziduwime/gjmicpM/11147737515.pdfIn PDF document text
    • https://cdn.sqhk.co/mevojazix/3EUkSif/76354887546.pdfIn PDF document text
    • https://nifavoweju.weebly.com/uploads/1/3/0/7/130739528/8974156.pdfIn PDF document text
    • https://cdn.sqhk.co/mamidusidozu/MQxIggd/world_conqueror_3_cheats_download.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/cmo_preparar_un_plan_de_social_media_marketing_gratis.pdfIn PDF document text
    • http://vemelaribox.getenjoyment.net/89123644649.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/kgeibjf/best_ww2_american_planes.pdfIn PDF document text
    • https://cdn.sqhk.co/wabitakenina/jjposv9/chilis_coupons_doordash.pdfIn PDF document text
    • https://xobagosuwetir.weebly.com/uploads/1/3/2/6/132680986/9733695.pdfIn PDF document text
    • https://zegibofes.weebly.com/uploads/1/3/4/4/134495781/39a93650b6.pdfIn PDF document text
    • https://motoburibekisi.weebly.com/uploads/1/3/4/6/134623685/pikamilowo.pdfIn PDF document text
    • https://cdn.sqhk.co/winanuwumovu/2wjcGhe/adt_pulse_login_registration.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/nuxulikiwab/livamevonuxowebofajise.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/51948979146.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/15141096271.pdfIn PDF document text
    • http://pogetowem.onlinewebshop.net/nupaxuzoralelujedutatexuv.pdfIn PDF document text
    • http://lukafimagog.atwebpages.com/it_book_chapter_3_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/dewalt_drill_combo_sale.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_off00014a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A25 5120 bytes
SHA-256: b46d2f4618ca57cf20bbaa4ddbf92b7442e608982487f5921a9b78230eab2d67
font_01_sfnt_off00015bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BC8 11096 bytes
SHA-256: 5181cbd051388d26e21dc94370a0631fd9a7e31ff7b11bb8ba1f49831cbb424a

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