Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce4e733fa63970d…

MALICIOUS

PDF

76.4 KB Created: 2021-04-23 13:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e399fa74c2694170f6a6968aa3f1dd9 SHA-1: 27ecdede947f733f8144eedc074ad143be4fffe6 SHA-256: 0ce4e733fa63970d51b288ba59d72ca81b05f06a144f5e1d3598006c974da3fe
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one prominent URL being https://seumenha.ru/strik?utm_term=how+to+speed+up+your+metabolism+on+a+vegan+diet. ClamAV detection as Pdf.Phishing.Trojan further supports its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or redirection attempt, likely leveraging a client-side exploit or social engineering to lead the user to a malicious site.

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://seumenha.ru/strik?utm_term=how+to+speed+up+your+metabolism+on+a+vegan+diet
    • http://bcipreactivaperu.com/health_the_basics_donatelle_test_bankj8aps.pdf
    • https://rapelolizoxofi.weebly.com/uploads/1/3/1/3/131381924/49fdfea9e9.pdf
    • http://stebsmeh.space/xigunahfs9w.pdf
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/lofimuwamiwuxadora.pdf
    • https://cdn.sqhk.co/woselukafo/jbgfzPf/it_project_manager_jobs_near_me.pdf
    • https://cdn.sqhk.co/fikalibumi/pUTeQVh/hourly_weather_report_newark_new_jersey.pdf
    • https://cdn.sqhk.co/getabemuto/hfgchfR/monosovero.pdf
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/3168475.pdf
    • https://cdn-cms.f-static.net/uploads/4422147/normal_6044dfbca15e4.pdf
    • https://cdn.sqhk.co/kesufetumo/egiooYf/zaziboxi.pdf
    • https://static.s123-cdn-static.com/uploads/4476445/normal_6002581f167e3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/57e79b4f-b9dd-435d-97cd-a2a9b28738d6/moxabaxixabunusaso.pdf
    • https://uploads.strikinglycdn.com/files/cf92d09c-06d9-4858-913d-bfce70800bd1/duzujidulefozujofut.pdf
    • https://uploads.strikinglycdn.com/files/15311e7c-f0d8-485c-afb6-b84775b8c682/mejizekugu.pdf
    • http://tapopopabe.rf.gd/acta_constitutiva_para_llenar.pdf
    • http://derajina.rf.gd/computer_science_an_overview.pdf
    • https://uploads.strikinglycdn.com/files/38dff459-388f-4898-b33e-8c868f1dfb0b/zofitexosunezepowuzirog.pdf
    • https://uploads.strikinglycdn.com/files/31011630-53a5-43af-a86f-e2bce3d347d9/26003573794.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_off0000ecd4.bin
dd7b57a7b2dbd9e8b1efa284899d93313684aa3c8ceb9fb24277dd0d44eea786
pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 5636 bytes
font_01_sfnt_off0000fff8.bin
71121d8afff52340c5513133fe1412109274f4431b5067caddbed307eb261dcf
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF8 10692 bytes