Malicious PDF — malware analysis report

Static analysis result for SHA-256 341398320c6890ba…

MALICIOUS

PDF

74.8 KB Created: 2021-03-15 02:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2c63115a91e6b7d27623e0dfbae576cb SHA-1: 288856845b944d86aaf20966a10e6c74b4839368 SHA-256: 341398320c6890ba834da3c5de19a2a52216e6beb12529b573e2aaf10349a287
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 0.9991

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://kuzutuzo.ru/wix?keyword=sega+saturn+emulator+apk PDF link annotation
    • https://wuzovogupo.weebly.com/uploads/1/3/4/7/134720757/gujegapurusaxiti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393488/normal_5fc575d616696.pdfIn PDF document text
    • http://uorott.com/metronome_applications_for_androidy7r99.pdfIn PDF document text
    • https://bopidojosonek.weebly.com/uploads/1/3/1/3/131384153/4da8d3d647.pdfIn PDF document text
    • https://duzetokip.weebly.com/uploads/1/3/4/4/134404829/8838504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489440/normal_603b3789a35fd.pdfIn PDF document text
    • http://biomanuawebsiteua.xyz/insanity_flyff_blue_chips_guidew10w6.pdfIn PDF document text
    • https://susutabum.weebly.com/uploads/1/3/4/4/134464128/mulanu-dutenisa-gifate-loxogunoto.pdfIn PDF document text
    • http://rukozhop-guide.com/amantes_del_desiertozirhp.pdfIn PDF document text
    • http://wisitens.online/697886775087r9on.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484103/normal_60188c7be0197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_6023fd8180ccb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479474/normal_6025b721102b6.pdfIn PDF document text
    • http://bloodcraft.online/carbon_black_defense_admin_guide0vlrd.pdfIn PDF document text
    • https://gifitutopa.weebly.com/uploads/1/3/4/4/134470147/malag.pdfIn PDF document text
    • https://tovibibuxajewen.weebly.com/uploads/1/3/5/9/135968099/vaxejupelu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bonoxebagaru.epizy.com/how_to_set_up_sonos_surround_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/galaxy_attack_alien_shooter_hack_mod.pdfIn PDF document text
    • http://mikaxobizo.epizy.com/88234587171.pdfIn PDF document text
    • http://tafupudininidag.rf.gd/if_i_change_my_address_with_the_post_office.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/diwolutekasu.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/first_training_program_half_marathon.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/differential_calculus_notes.pdfIn PDF document text
    • http://xapamafoxufovig.epizy.com/messenger_for_pc_desktop.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

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_off0000e732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE732 5308 bytes
SHA-256: 3b72762748d563c4846e63fa75fb57ac1acb8f80c007ac2d81c7ff025c235d24
font_01_sfnt_off0000f92b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92B 11040 bytes
SHA-256: 29a1fd6f46e9244fab832d9d1e0719d78fabbae12e8447db80a246a34c15c452

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