Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cea1c9029f1d7bf…

MALICIOUS

PDF

81.4 KB Created: 2021-02-16 06:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd063d4af67a37be4ac9470a0209d29e SHA-1: 93634436bec98ce1e8d0964afb20a490f1231625 SHA-256: 7cea1c9029f1d7bf115d5b093d99f61fb913f9198626501dfdccd51d19b6141a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site disguised as a list of hosting companies. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristic firings suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/strik?utm_term=list+of+hosting+companies+in+delhi
    • http://bemigovoso.iblogger.org/91825349417.pdf
    • https://cdn-cms.f-static.net/uploads/4490370/normal_60135d1826964.pdf
    • https://cdn.sqhk.co/puwupasakej/hthez4I/demufakomisupus.pdf
    • https://cdn-cms.f-static.net/uploads/4446931/normal_6013191d4a23d.pdf
    • https://cdn-cms.f-static.net/uploads/4455208/normal_601ebfb1518d7.pdf
    • https://static.s123-cdn-static.com/uploads/4365598/normal_600336fb7f05b.pdf
    • https://cdn.sqhk.co/gegenosuzun/Hibrz8p/active_police_chase_near_me.pdf
    • http://pimupafigofud.iblogger.org/depression_treatment_plan.pdf
    • https://cdn.sqhk.co/fegojujor/gdDjcfb/regowofubewo.pdf
    • https://cdn.sqhk.co/divekezor/hdgdyGr/6561201261.pdf
    • http://geosen.net/xazoseke3r41v.pdf
    • http://tonerinkstore.com/fadugexovinejuxol3agcb.pdf
    • https://cdn.sqhk.co/goganededem/TghTgjt/ear_doctor_near_me_cheap.pdf
    • https://static.s123-cdn-static.com/uploads/4421342/normal_5feea509ea486.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lejopuluke.rf.gd/farming_simulator_2015_cows_guide.pdf
    • http://bozizivaposenu.epizy.com/71757179922.pdf
    • http://vosivoru.epizy.com/lizigilewur.pdf
    • http://xuvafinuvewabek.epizy.com/hrsa_uds_summary_report.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4c7.bin
3a210f3743c01bf1f6498f223d0a852da7409ed5f7f7dbd71b00845dcc0c48e7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C7 5416 bytes
font_01_sfnt_off00010712.bin
7b2187306cb5ab2e3c438d7760ad59d18e7938a031266135619e61f7043048a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x10712 2580 bytes
font_02_sfnt_off00011281.bin
2993388195472f3481e075757c0a258886c99a22177d28b9f7a54375ed7ff271
pdf-font-stream PDF embedded font (sfnt) at offset 0x11281 10976 bytes