Malicious PDF — malware analysis report

Static analysis result for SHA-256 455969ead1ead137…

MALICIOUS

PDF

86.9 KB Created: 2021-04-03 22:17:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feadc0225c099f28a1156c5b06d92131 SHA-1: 8c7741d71970381432482707ec70d60f1f939760 SHA-256: 455969ead1ead1374a97090ea26920c2054f8a4cc2a7d487eb8715f6f57ba83f
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=coleman+sportcat+catalytic+heater+canadian+tire
    • https://static.s123-cdn-static.com/uploads/4481671/normal_6002587a91ed6.pdf
    • https://cdn.sqhk.co/fukafodifi/erZhbjf/answer_key_of_tallentex_2020_exam.pdf
    • https://guvoladedesu.weebly.com/uploads/1/3/1/4/131453897/03005d57b3d7f99.pdf
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5fdb28f18aa02.pdf
    • https://rekeboko.weebly.com/uploads/1/3/4/8/134899800/f355d38d6.pdf
    • https://cdn-cms.f-static.net/uploads/4409623/normal_602649bc4cddd.pdf
    • https://cdn-cms.f-static.net/uploads/4416128/normal_6028951c0bab9.pdf
    • https://cdn.sqhk.co/vunalogivefu/6jfidja/46916533905.pdf
    • https://cdn.sqhk.co/dagosasojo/igYujii/jet_boat_racing_accident.pdf
    • https://kiwakamumosa.weebly.com/uploads/1/3/5/9/135963193/lifobalodogaboximajo.pdf
    • https://cdn-cms.f-static.net/uploads/4425507/normal_600f8f5620189.pdf
    • https://xatotaga.weebly.com/uploads/1/3/4/7/134726025/wigafe.pdf
    • https://cdn.sqhk.co/lizuloka/S4jjPhg/amazing_crime_strange_stickman_rope_vice_vegas_unblocked.pdf
    • https://watubozez.weebly.com/uploads/1/3/5/3/135346011/zeluselusobi.pdf
    • https://zunenevalomedo.weebly.com/uploads/1/3/4/8/134855990/9487892.pdf
    • https://cdn.sqhk.co/niporatibu/ahhTihJ/std_10_science_textbook_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ce9f5f10-cf20-492d-a7f0-96164fd9cf66/basic_power_electronics_mcq.pdf
    • https://uploads.strikinglycdn.com/files/af668d1f-db39-4905-818b-36b12d85bc41/simpson_3200_psi_pressure_washer_hose.pdf
    • https://uploads.strikinglycdn.com/files/4111bb6a-9d0e-47a8-8f1e-d602910508ef/the_disaster_artist_cast_vs_real.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_off0001114a.bin
1b49b10b58bcf7aa77b22b4a8261bc1b0e0f9d20a81041e5b5232e8ce82a3543
pdf-font-stream PDF embedded font (sfnt) at offset 0x1114A 5320 bytes
font_01_sfnt_off00012333.bin
1ec0abaea65ba66697d3f784ec7e17c23e9b2a8eb4d97be1e76d5f88ca337354
pdf-font-stream PDF embedded font (sfnt) at offset 0x12333 12396 bytes