Malicious PDF — malware analysis report

Static analysis result for SHA-256 9214b1b1d5080fbb…

MALICIOUS

PDF

74.1 KB Created: 2021-03-20 01:15:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 08a3c5d36fde02a6d0ad647fe442c914 SHA-1: 52868db3c381a4d1c03a9216efdb376254b5e125 SHA-256: 9214b1b1d5080fbb01767cc7e4ff88bd16088f746fbc8a8b625d7b71431027ee
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 0.9995

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://jacksth.ru/123?utm_term=jbl+charge+3+specs+sheet PDF link annotation
    • http://sitizinudex.getenjoyment.net/86739482118.pdfIn PDF document text
    • http://nunobuzipame.medianewsonline.com/kidoxoj.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/jUEjaLf/sky_whale_is_a_plane_with_four_engines.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/bejep.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/20439407045.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/0KgisjM/ketajirulaxad.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/ammonification_process.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd1ddbe-d99a-4917-8e2f-161faf2a0d2d/moxejigedumaribev.pdfIn PDF document text
    • http://ketabigumowun.atwebpages.com/romeo_and_juliet_act_2.pdfIn PDF document text
    • http://fabovodowep.epizy.com/temco_fireplace_tfc36-3.pdfIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_5024cac48011405aadd205e5cb512787.pdf?index=trueIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_fede7967c9d247ee9d740789803bf7bc.pdf?index=trueIn PDF document text
    • http://pidusagi.atwebpages.com/how_to_turn_on_amazon_echo_dot_2nd_generation.pdfIn PDF document text
    • http://sasaxunofob.atwebpages.com/kamadamir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2f9f463-90f6-4570-9591-da313405878b/nukawufiwedurogowifivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02fa1a31-ae78-4351-a4b9-5b4400d354ee/weber_spirit_ii_e-210_2-burner_liquid_propane_grill.pdfIn PDF document text
    • http://xuresiru.epizy.com/lightroom_cc_apk_uptodown.pdfIn PDF document text
    • https://e6a48395-9ebc-465e-8505-c4b20d7b8e72.filesusr.com/ugd/81e12b_7254a585145a41f59c37aae959505d43.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d163fec-6c73-4b72-a235-cf481ff01bc3/kurewisilezexukavomaxi.pdfIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_f68c348247ba4c709ad91eed66b02018.pdf?index=trueIn PDF document text
    • http://vibirokudod.myartsonline.com/a_decima_profecia_celestina.pdfIn PDF document text
    • http://zezatiwo.epizy.com/clash_of_clans_mod_apple.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD923 5488 bytes
SHA-256: bc7c2a7199208b5b332118b23d55e65117f0f002bb33753249cd7c064a069fbb
font_01_sfnt_off0000ebbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBD 2048 bytes
SHA-256: 54800217e0bdab6a0652dc3c325351488f93f1dbab54dcba8732948bcf8ee3ab
font_02_sfnt_off0000f4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A0 11340 bytes
SHA-256: 9cdb6f405304652276104d09f39fc278c2e022e3f454164ab104df538c76f06f

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