Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17c620035ce8057…

MALICIOUS

PDF

67.8 KB Created: 2021-03-18 12:57:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 924658c4716841e7812cbe991cf78bab SHA-1: c066f449f7e4a6d653ca514f0cb65c9be4f627c1 SHA-256: c17c620035ce8057b7b1e0259e3d94e8dffaff43c5da480a41eed7e572d22edf
186 Risk Score

Malware Insights

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

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 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.
  • 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://golowaki.ru/aws?utm_term=the+elder+scrolls+official+cookbook+pdf+download PDF link annotation
    • https://cdn.sqhk.co/niririga/6LjdgfN/universe_sandbox_free_no_download.pdfIn PDF document text
    • http://jepoletas.iblogger.org/97087839074.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/hggPihb/island_village_minecraft_seed_bedrock.pdfIn PDF document text
    • https://cdn.sqhk.co/besogevipadi/f7GR5gg/tanagusumikexose.pdfIn PDF document text
    • http://xezodisezimado.iblogger.org/61720909110.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/whcGiby/border_patrol_jobs_arizona.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/Yyicihg/autonics_panel_meter.pdfIn PDF document text
    • http://kijuguwosaxo.22web.org/80404604045.pdfIn PDF document text
    • http://lonagonem.22web.org/kajewifijagobawijoduti.pdfIn PDF document text
    • https://cdn.sqhk.co/gotuxixovumu/jcicEcD/forijer.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetovukufo/cnhdgcY/76948924989.pdfIn PDF document text
    • http://nesakud.mypressonline.com/17186656485.pdfIn PDF document text
    • http://menesoger.iblogger.org/15169710750.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/aKYNLib/minecraft_toolbox_mod_apk_premium.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/qRLii0S/65748418053.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_c5a3fa6bd74242ff94247983878acd33.pdf?index=trueIn PDF document text
    • http://xinudigiwuwa.epizy.com/cracked_vpn_apk_onhax.pdfIn PDF document text
    • https://89e1056b-8c01-44a4-bea5-a80a497d444f.filesusr.com/ugd/6db6f7_b3cbf93ec4e248cdb85bc6f6df8fcdbc.pdf?index=trueIn PDF document text
    • http://gusalixofunek.epizy.com/best_software_architecture_books_2020.pdfIn PDF document text
    • http://zorijefugixor.atwebpages.com/should_i_install_python_to_path.pdfIn PDF document text
    • http://livixagilimi.rf.gd/importance_of_periodic_table.pdfIn PDF document text
    • http://lulevewutowa.epizy.com/ktm_bike_game_mod_apk.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_off0000cadc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADC 5488 bytes
SHA-256: 6f1f4985d6a015ea205cc1bf880f6ddcc1cf353a1f499c818abed1e378ccd0db
font_01_sfnt_off0000dd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8B 10824 bytes
SHA-256: 289f870ccf7d1048a91505b89a01cfdb62eb9f31f3c32cb8cd28a49d4d788a7e

Open this report in the interactive analyzer, or submit your own file for analysis.