Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe34fe4dbf1a0c46…

MALICIOUS

PDF

65.3 KB Created: 2021-02-17 05:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ca804959f80ea861d92a0572f5f7fbe4 SHA-1: 99ac74ccf0242cbeff63bdb23ad211403206a6ef SHA-256: fe34fe4dbf1a0c46bcb1924df9a23013fce6e212f593db30ae035c1fcb027b07
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 high likelihood of malicious intent. The embedded URL, 'https://bologen.ru/wix?keyword=molar+mass+of+mg%2528no3%25292', suggests a phishing or credential harvesting attempt by luring the user to a compromised or malicious website. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure.

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://bologen.ru/wix?keyword=molar+mass+of+mg%2528no3%25292 PDF link annotation
    • http://topcabinets.xyz/solving_linear_equations_using_elimination_worksheetm5nuu.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/eFu0njb/94687071113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445570/normal_6021ae4c79800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377400/normal_5fcd5db0e9e0c.pdfIn PDF document text
    • https://cdn.sqhk.co/gixezovof/bigBtsu/62208520220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387701/normal_602b0ec904862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469106/normal_6015f311d5799.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427514/normal_5fdf88ea19cac.pdfIn PDF document text
    • http://complect-tech.ru/kuverapuzowebopopsa59z.pdfIn PDF document text
    • https://cdn.sqhk.co/jutalufelex/C4Lgjje/walesi_app_download_free.pdfIn PDF document text
    • http://rasprodavaika.ru/slater_s_rule_practice_problemsz03te.pdfIn PDF document text
    • http://teachost.com/catalogo_repuestos_stihl2zi2x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419425/normal_5fe1406f5c12c.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/dhihfhc/rally_health_inc_washington_dc_phone_number.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC269 5540 bytes
SHA-256: 4217e9187a13d32e878de0873e3aa13b5e8fa266bf9b876d060d3eb4f2c8229f
font_01_sfnt_off0000d547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD547 10296 bytes
SHA-256: 57388b09a3b1979c9009a1e87b2a63f48b88de5e3540a2d035e3100cf3a564c0