Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce2f15460e04b16…

MALICIOUS

PDF

65.1 KB Created: 2021-03-03 20:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c285675876c04fcfadd21547755aa2ac SHA-1: 9a16aae17c65eaf8d0269ac420e694faeb5c7c6b SHA-256: bce2f15460e04b16d9930d9ef75b86e520acd0334856397cff6437e3524487c5
164 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious websites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/wix?keyword=acuxp+micro+manual+portugues
    • https://cdn.sqhk.co/xanodujijefu/jcfedmw/ceramic_art_tiles_scotland.pdf
    • https://cdn.sqhk.co/rumomezojeku/904ifxx/fupekululujapiwubosajado.pdf
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/dibed.pdf
    • http://getsalle.xyz/gepijefemik8fk2t.pdf
    • https://cdn.sqhk.co/rixakowu/gjg8hbR/kaxulobuzadov.pdf
    • http://scoretdho.best/cuanto_es_120_gr_en_tazaszyyfv.pdf
    • https://cdn.sqhk.co/givikufat/8qVWjhd/rock_radio_station_los_angeles_ca.pdf
    • https://cdn.sqhk.co/xanuramalu/dOHFwhe/stick_ranger_2_hacked.pdf
    • https://cdn.sqhk.co/mijajijem/oihaHgj/pavubarosikereguxevavo.pdf
    • http://semengergel.ru/whirlpool_cabrio_dryer_troubleshooting_guide7sx4v.pdf
    • http://suvafedam.iblogger.org/date_format_uk.pdf
    • https://cdn.sqhk.co/potasuregoz/Egcijgg/infinity_stones_marvel_strike_force.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nivuzujele.epizy.com/how_to_get_a_letter_of_administration_in_new_york.pdf
    • http://bedawisanono.epizy.com/aarum_kaanathe_video_song.pdf
    • http://watafas.rf.gd/suxukavuneparurezaj.pdf
    • http://demunoj.epizy.com/mh_world_behemoth_solo_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c383.bin
1af229616b1aa505e8bcb171ef31bbb53b1f02d46accebaeed5c89fd9b655c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0xC383 5308 bytes
font_01_sfnt_off0000d583.bin
8d097aca7fd907da8116162b32138d1a4adad8458730ac994b954f368fe70345
pdf-font-stream PDF embedded font (sfnt) at offset 0xD583 10016 bytes