Malicious PDF — malware analysis report

Static analysis result for SHA-256 6505e58511804006…

MALICIOUS

PDF

78.8 KB Created: 2021-05-12 08:35:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1a3fbfa00f203aeb0f03251e604407d3 SHA-1: 8f42ac098e837a5ee1f097439827c39af1785f1e SHA-256: 6505e58511804006274037fbce345132fcb7c340ee2b0e22297aa77cffc60781
126 Risk Score

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 0.9964

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://vilenefex.ru/strik?utm_term=what+does+on+cloud+nine+mean+idiom PDF link annotation
    • https://cdn.sqhk.co/kinuneba/Bujddgj/whatsapp_business_apk_latest_version_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/eggOZ6D/airplane_movie_autopilot_image.pdfIn PDF document text
    • http://kanotisutujag.iblogger.org/deveguxikofulabojexavosu.pdfIn PDF document text
    • http://clubstore.pro/gardners_art_through_the_ages_15th_edition_online83cmt.pdfIn PDF document text
    • http://iranianvc.com/how_to_apply_the_art_of_seductiont5bdy.pdfIn PDF document text
    • http://healthyforczechrepublic.site/flip_phones_for_seniors_t_mobilee7vk5.pdfIn PDF document text
    • http://fowevuwakit.22web.org/kwikset_premis_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vinasujitupe/2iavkWL/puzzle_3d_lemn_lidl.pdfIn PDF document text
    • http://moshon.space/does_harris_bed_bug_killer_really_workezl0n.pdfIn PDF document text
    • http://zekoselu.22web.org/74324052422.pdfIn PDF document text
    • http://cabinetsly.xyz/675778478882l3mf.pdfIn PDF document text
    • http://cpskras.website/30447889879k6bb8.pdfIn PDF document text
    • http://24goodstore.site/tejimili7336l.pdfIn PDF document text
    • http://1xbets-reg.site/download_gta_4_for_ppsspp_highly_compressediikc0.pdfIn PDF document text
    • https://cdn.sqhk.co/kususarefeja/igQthdu/79314286904.pdfIn PDF document text
    • http://13millions-warzone.store/will_there_be_any_festivals_in_20212adbs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fafuwite.epizy.com/bapipa.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/juwigubawuwozikorib.pdfIn PDF document text
    • http://nizamazibenu.rf.gd/begusomewejano.pdfIn PDF document text
    • http://lulejusumuru.epizy.com/wawafogepinu.pdfIn PDF document text
    • http://wurozuvejesubot.epizy.com/beat_maker_games.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/difference_between_sadness_and_melancholy.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/matlab_image_processing_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/365_days_of_wonder_free_download.pdfIn PDF document text
    • http://wemiwapava.epizy.com/86273019817.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/22159787173.pdfIn PDF document text
    • http://wetowotupime.rf.gd/62630412620.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_off0000f7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BB 5096 bytes
SHA-256: e2f5754de1d4a01a0642827735208186df463ce3bea087f84e3c11e75a8cbdfb
font_01_sfnt_off000108f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108F4 10696 bytes
SHA-256: 9d33c16a9ace75549584617da5ced8eab336227415a998d5dbd68fc5e85ff416

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