Malicious PDF — malware analysis report

Static analysis result for SHA-256 f468b3fca211ec82…

MALICIOUS

PDF

70.1 KB Created: 2021-02-20 02:18:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c1d432b0ab8fc131aa0df36fd6907e4f SHA-1: 2b0159456cb7dcd508499163adbbad2271f3cc71 SHA-256: f468b3fca211ec820f3577feeed4e1df5f653aaaf3e53c8febc191d0fd8e5819
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/wix?keyword=lg+model+55ls4500+manual PDF link annotation
    • https://rezezeveg.weebly.com/uploads/1/3/1/8/131871466/ba2b1ae73a02fd.pdfIn PDF document text
    • https://vexibalob.weebly.com/uploads/1/3/4/8/134896466/dasipomajaw.pdfIn PDF document text
    • https://cdn.sqhk.co/mawodoso/hEjiif4/war_and_magic_android_gameplay.pdfIn PDF document text
    • https://rakulemiz.weebly.com/uploads/1/3/2/6/132682689/wajaroxedox.pdfIn PDF document text
    • https://vamububok.weebly.com/uploads/1/3/5/3/135317225/zifonuwim.pdfIn PDF document text
    • https://tugalebuwe.weebly.com/uploads/1/3/4/0/134012885/3813384.pdfIn PDF document text
    • https://susejovidexoxi.weebly.com/uploads/1/3/0/7/130775922/27a6aec.pdfIn PDF document text
    • https://judexesadizit.weebly.com/uploads/1/3/0/7/130738912/47cd01931f.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/kBL6Ugd/real_steel_boxing_champions_mod_apk_android.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/7667815.pdfIn PDF document text
    • https://xaweworamek.weebly.com/uploads/1/3/4/6/134610398/nusodoje.pdfIn PDF document text
    • https://kujarubokaja.weebly.com/uploads/1/3/4/5/134590089/9683225.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/himmgfL/hungry_snake_game_apk.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/lodazojamuva/8338688712.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/how_to_run_a_print_head_nozzle_check_epson.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/gloomhaven_mindthief_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/airline_safety_management_system_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/58202526161.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_off0000d6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C6 5344 bytes
SHA-256: 0f1ff1ed723721dfe73df94d4f8a6a3ec062c70cc5b466ef1d07711f5ca0af60
font_01_sfnt_off0000e8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F1 10036 bytes
SHA-256: f7109480879220d438b303a8bda882b3554a60946a626e50c10acb6c8326b19a

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