Malicious PDF — malware analysis report

Static analysis result for SHA-256 6285341647036d4f…

MALICIOUS

PDF

69.2 KB Created: 2021-02-08 02:23:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 97c73d631c50016fca79e2837a77f0e3 SHA-1: 467339697906a8d3b3615244f5e6a357bcd03d3c SHA-256: 6285341647036d4ff287653c31daeac043e0f0dd81050ff6acbef3b327a99537
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=inventory%20audit%20report%20format%20in%20word In PDF document text
    • https://xizavuxovom.weebly.com/uploads/1/3/3/9/133986710/tazumaw.pdfIn PDF document text
    • http://lami-lashes.site/man_down_lyrics_lil_durk0d8at.pdfIn PDF document text
    • https://kelogukagikuval.weebly.com/uploads/1/3/0/7/130739039/79f6a64e77.pdfIn PDF document text
    • http://chaptejvxz.fun/janizilulaladatidenezunobneex.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/e6jibNH/31572956666.pdfIn PDF document text
    • https://cdn.sqhk.co/wemegofuk/dS9jhgf/95130035087.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/8ihfhh1/best_races_at_daytona_beach.pdfIn PDF document text
    • http://tertov.xyz/introduction_to_materials_managementhxptg.pdfIn PDF document text
    • https://cdn.sqhk.co/kapokosop/ii67ygc/vawirinubukesadu.pdfIn PDF document text
    • https://kilavolofijon.weebly.com/uploads/1/3/1/1/131164174/nelozegugiji.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/iVgelij/58791068227.pdfIn PDF document text
    • https://cdn.sqhk.co/gejemizus/ajiNrhc/pixel_s_unknown_battle_ground_offline_or_online.pdfIn PDF document text
    • https://gimiduti.weebly.com/uploads/1/3/4/7/134711596/lowod.pdfIn PDF document text
    • https://danexuxubusam.weebly.com/uploads/1/3/2/6/132695747/8172998.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bewojux.epizy.com/figijixefalopa.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_off0000d0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B0 5168 bytes
SHA-256: 846fa045114f96081028e02309fe9dfab4ad9facc05f4473bf411d5d595bc008
font_01_sfnt_off0000e24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24E 11096 bytes
SHA-256: 401be3b451ed3673d338230ffcea6623910ff4a709298cae78baa5b553cbfc5f

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