Malicious PDF — malware analysis report

Static analysis result for SHA-256 210fa29c2c8ea6fd…

MALICIOUS

PDF

83.6 KB Created: 2021-04-03 12:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3fed4b6339ca6e3d9562f13b7cf5ba7 SHA-1: edbe1ad80ed208bc0da000e8ad81b93726eebbb2 SHA-256: 210fa29c2c8ea6fd8b115880e18f63cea6a2f022dc6d3afe1b9d1e87fa50c590
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a crossword clue, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=type+of+monk+crossword+clue
    • https://cdn.sqhk.co/vixawutozama/gdjjQgi/red_alert_we_make_events_canada.pdf
    • https://cdn-cms.f-static.net/uploads/4427079/normal_605ee951310ed.pdf
    • https://cdn-cms.f-static.net/uploads/4366339/normal_604181ac46278.pdf
    • http://retys.fun/dell_optiplex_9020_aio_i5_specs3dugv.pdf
    • http://pesuzukotejoki.iblogger.org/moligos.pdf
    • https://static.s123-cdn-static.com/uploads/4380226/normal_5ff03236a23a1.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • https://cdn.sqhk.co/fugovigul/RgiJRhj/hitman_sniper_challenge_pc_gameplay_mission_1.pdf
    • https://cdn.sqhk.co/momujolo/mibghgh/transformers_earth_wars_overlord.pdf
    • https://cdn-cms.f-static.net/uploads/4476925/normal_603b34ffd0d75.pdf
    • https://cdn-cms.f-static.net/uploads/4381531/normal_5fe72150cf530.pdf
    • https://cdn.sqhk.co/pumafuki/nwhjicw/72350820082.pdf
    • https://static.s123-cdn-static.com/uploads/4381997/normal_5ff1628516d94.pdf
    • http://barcaporirternet-interbank-pe.com/what_did_god_say_about_pisceslui1t.pdf
    • http://hhizmet.com/279224219330twoh.pdf
    • https://cdn.sqhk.co/bemoranoz/hjcigy3/magic_liker_for_instagram_hack_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4482228/normal_6059931869609.pdf
    • http://mif-smeh.space/42052087190x9wn7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/boxujetanonikuv/tokalodanetugajirikefoni.pdf
    • https://s3.amazonaws.com/wavunot/articles_of_incorporation_texas_form.pdf
    • https://s3.amazonaws.com/zodererezuzuxi/vimebasedegore.pdf
    • http://tekonudobigu.rf.gd/87272474490.pdf
    • https://s3.amazonaws.com/pukaridimupo/games_to_play_during_quarantine_ps4.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/74716143356.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_off0001082c.bin
96d67228a2a57787638cca2eaf28dc75974bc4dbb2584217c58b589b4caaf574
pdf-font-stream PDF embedded font (sfnt) at offset 0x1082C 5296 bytes
font_01_sfnt_off00011a44.bin
0c77c67b99f0b785b1bf786c7ba24570193671f306452f09092c4f95b94cac67
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A44 11548 bytes