Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a4c84bb18762d6…

MALICIOUS

PDF

76.9 KB Created: 2021-02-13 05:39:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67609bc05cc222d4ec30f41795319902 SHA-1: 1780a4d64607f5a6b21b7a4a04b06088178f31d7 SHA-256: 24a4c84bb18762d612cd387d6fcf569204cf27d81984eed95cb78d235615a766
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI that redirects to a URL associated with phishing, likely intended to lure the user into downloading a further payload or providing sensitive information. No scripts were extracted, but the PDF structure and embedded URI strongly suggest malicious intent.

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://druttle.ru/wix?keyword=socket+mobile+scanner+s740+manual
    • https://regisaralox.weebly.com/uploads/1/3/2/6/132681556/delabusixuk_nukidisumezeg_vituzamajida_jujesikiwa.pdf
    • https://xinosete.weebly.com/uploads/1/3/0/9/130968926/vigadi.pdf
    • https://cdn-cms.f-static.net/uploads/4455673/normal_601778daa468e.pdf
    • https://cdn.sqhk.co/duzoxibuf/gjethjE/stickman_downhill_motocross_mod.pdf
    • https://soxapibojewaw.weebly.com/uploads/1/3/5/3/135345372/jisulakep.pdf
    • https://cdn.sqhk.co/wemitupu/heij5ib/taxolifalinerosivirozowo.pdf
    • https://cdn.sqhk.co/zidexamuwela/O0jbHxG/how_to_draw_cartoon_hands_step_by_step.pdf
    • https://cdn.sqhk.co/xaranoraf/b4hadcB/8528171832.pdf
    • https://cdn-cms.f-static.net/uploads/4470400/normal_601d4f3cb7c53.pdf
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5fc76f7d3e177.pdf
    • https://static.s123-cdn-static.com/uploads/4416929/normal_6001d86a80405.pdf
    • https://zajoralesame.weebly.com/uploads/1/3/0/9/130969459/374769.pdf
    • https://cdn-cms.f-static.net/uploads/4374847/normal_6014021edfe33.pdf
    • https://cdn.sqhk.co/vipujitebiki/dBchgC3/dedazuvixofilijaf.pdf
    • https://cdn.sqhk.co/vakanaju/EheHjjN/89455120055.pdf
    • https://sexitikimuzulab.weebly.com/uploads/1/3/5/2/135296232/4ed7cf68.pdf
    • https://lumixomenuvaw.weebly.com/uploads/1/3/4/7/134745504/kusaxatox-xesizanamow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kelukakeb/blue_formal_dresses_with_sleeves.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_off0000e2dd.bin
a62d891fce313d5e371309ade9b0e40c781af66f83988a04d1da53e533ef7edf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 5444 bytes
font_01_sfnt_off0000f544.bin
2944df180c6aba16d84418e45b1e93ffc314040eb1a745165651bddfb34cb2bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 10284 bytes
font_02_sfnt_off00011842.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11842 4324 bytes