Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c056c6ff750a451…

MALICIOUS

PDF

74.0 KB Created: 2021-03-09 04:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 201770db45db9b9071420d14a5231925 SHA-1: cb69ca4c636bc6f468e28c7beb9cbdfcf373b56a SHA-256: 2c056c6ff750a45126377f9bd0e75b0f827e99f09a5c6015d8f27a0786523b2b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, many of which are identified as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. The document body, though heavily obfuscated, references 'Tangled movie song free', suggesting a lure to attract users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/123?utm_term=tangled+movie+song+free PDF link annotation
    • http://everydayy.fun/live_minnows_for_crappie_fishingpaflw.pdfIn PDF document text
    • http://smeshnoykir.space/update_android_9.0_oppo7rphw.pdfIn PDF document text
    • https://tikigafose.weebly.com/uploads/1/3/0/8/130874564/5989127.pdfIn PDF document text
    • https://fefufivakelazi.weebly.com/uploads/1/3/0/7/130739222/3eb8de473ad02.pdfIn PDF document text
    • http://fb-ig-copyright.com/lethal_race_hacked_gameogkwr.pdfIn PDF document text
    • http://pinegrvuig.fun/9970611735686abb.pdfIn PDF document text
    • http://raffle.website/bits_business_information_technology_solutions6mzl8.pdfIn PDF document text
    • http://raisinshq.club/kedowixogimepubijobikaxordxna7.pdfIn PDF document text
    • http://shoop-fm.ru/hw-hm45c_remote_codeom1ff.pdfIn PDF document text
    • http://potolkilife.ru/giriwibemop75b7.pdfIn PDF document text
    • http://edevletorg.com/kopokopopibadobolo71j6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_751b9411d1ab44f695fd82e96455bd7a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/78487baf-79a2-4d66-8038-e7a01eca2e6e/dell_optiplex_9010_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f855925-7176-43dc-ab87-29a57919b7a8/how_is_dyson_so_rich.pdfIn PDF document text
    • https://5ce19dfa-329f-495d-88d1-e1e7834d9072.filesusr.com/ugd/d902bb_230ecec7fc9a4cf0abf83f64349c0b91.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C2 5236 bytes
SHA-256: 612e7f8e1b7b08fdfb9aaff63ba1ee64d31f4fa866b17975c151d53f516bf975
font_01_sfnt_off0000f583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF583 11344 bytes
SHA-256: a01f1cbd58285164bc5b9c722f0c264cb5e0317a2b3968192fc288c6c9d3a66e

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