Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a48e31cd0747cd…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 07:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ef52bff34d8c7f6765ba1eaa1be0a78a SHA-1: 9ca10c2a371e2e4619578ef53203b34dd4070622 SHA-256: 35a48e31cd0747cdc51805e019c59e355ddafea8df26593a6f169ce554b22ead
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://druttle.ru/strik?utm_term=student+exploration+distance+time+and+velocity-time+graphs+answers+pdf PDF link annotation
    • https://cdn.sqhk.co/kesumixom/fdMyG8X/transformers_forged_to_fight.pdfIn PDF document text
    • https://xakirajurupani.weebly.com/uploads/1/3/2/3/132303083/88de8b8.pdfIn PDF document text
    • https://fugakesuj.weebly.com/uploads/1/3/0/7/130776648/bevufak.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/d0139b114.pdfIn PDF document text
    • https://jovigazever.weebly.com/uploads/1/3/1/6/131637362/nebal_rorutefebuser.pdfIn PDF document text
    • https://cdn.sqhk.co/naxopesareg/ehhhhjh/vitamin_d_supplement_benefits.pdfIn PDF document text
    • https://posilopawirina.weebly.com/uploads/1/3/4/3/134353572/kitunumuxumu_pudax_devuzivesik.pdfIn PDF document text
    • https://mekowoto.weebly.com/uploads/1/3/0/7/130738632/24855be.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/oeggqjT/lutakizizowupaberojezexi.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/gdv0ifS/word_on_fire_podcast_mass.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/how_to_make_the_game_of_life_a_drinking_game.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/jIheqjf/okay_okay_pop_smoke_gif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lumosaneja.onlinewebshop.net/44505147997.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/fixed_assets_accounting_book.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/lurugoropuzedunuja.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/44214320002.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/79895558887.pdfIn PDF document text
    • http://nununad.myartsonline.com/74354892987.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_off0000dbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE6 6028 bytes
SHA-256: 77df9627263886a7974fef9b3b84325e5a139e095952023dd5584861a1cb29d0
font_01_sfnt_off0000f064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF064 10448 bytes
SHA-256: f42307f8130007c1866b723f1093542af5c116385cbd91bf93489fc71c4f6285