Malicious PDF — malware analysis report

Static analysis result for SHA-256 488af06fc1fed56b…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 09:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10331c6d5cc96e3f26e54a15e27e4a98 SHA-1: cead2ef2d5269dfa201ae528418d37d49c313490 SHA-256: 488af06fc1fed56b69d310c59f41ef402718f09cbb62c2e136bd2a5fd4dd76fc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=hype+unblocked+games+bad+eggs+2 PDF link annotation
    • https://cdn.sqhk.co/devisofage/9uElpet/fikakuvezalabukigalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_60414ca19bc7f.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/jajFK8H/10937760169.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutazomaga/ngeTvja/31461519720.pdfIn PDF document text
    • http://fumizudo.sportsontheweb.net/sokamekil.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxazagugura/giijnjf/tetisoderet.pdfIn PDF document text
    • http://bilkan.fun/66043349575jbiep.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/7mm_rem_mag_load_data_h1000.pdfIn PDF document text
    • https://cdn.sqhk.co/lesebonun/jdhdgg1/61022978693.pdfIn PDF document text
    • http://okclub.org/17020746095bx17e.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/cgiaqJ8/republique_restaurant_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_6057e3c80178d.pdfIn PDF document text
    • http://fito4ka.xyz/cant_find_disney_plus_on_lg_tvhe6b5.pdfIn PDF document text
    • https://cdn.sqhk.co/gabixeme/jJbgjji/war_dragons_blog_lockjaw.pdfIn PDF document text
    • http://ruvinowuge.scienceontheweb.net/lenovo_t430_laptop_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/bapulofuw/eegfwie/comic_life_3_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_603076a20f944.pdfIn PDF document text
    • https://cdn.sqhk.co/bimepefav/ehaYHop/fallout_shelters_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464861/normal_6052c2073fb13.pdfIn PDF document text
    • https://cdn.sqhk.co/zolususux/yihibhd/ludofebebatorabupan.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/je36v0z/kezawonubunifobat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lavisekenesavof.myartsonline.com/lekewobenakase.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_off0000eb7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7D 5696 bytes
SHA-256: 4dac3b40d17b375c6c03d157ca083dcc2233e8921823d9f297cfdb062febcc42
font_01_sfnt_off0000fede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDE 11452 bytes
SHA-256: 19d42692082d6708456de850e12cfbb9a27f0c14144773cf21b0353725456986

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