Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde3efdd46284dce…

MALICIOUS

PDF

52.6 KB Created: 2021-03-12 14:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 1ed12375aa402420471088ae7c2fa2ac SHA-1: 6f1b93f120e75d89c6a0c71b50a76f78bb0cce8e SHA-256: cde3efdd46284dce3b73e06cb5bb100159ed32ab27f0199331cc21c4e3246b9e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external URLs, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to IELTS synonyms, directing users to a suspicious URL. This indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/award?keyword=list+of+synonyms+and+antonyms+pdf+for+ielts PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473375/normal_603e3d092ad7e.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/86971684430.pdfIn PDF document text
    • https://cdn.sqhk.co/kibutonap/iiifhhy/port_lympne_zoo_tickets.pdfIn PDF document text
    • http://kedejivebirago.iblogger.org/12096452814.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/zidiwamifitu.pdfIn PDF document text
    • http://fepotarugagi.22web.org/1848471424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476939/normal_6027b7f76de32.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/4397268.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/fjfMcjh/craigslist_furniture_for_sale_springfield_il.pdfIn PDF document text
    • https://fozibopabedabe.weebly.com/uploads/1/3/6/0/136082219/45f12394495722.pdfIn PDF document text
    • https://dumidonawusirug.weebly.com/uploads/1/3/5/3/135306770/128718.pdfIn PDF document text
    • https://sulewana.weebly.com/uploads/1/3/4/6/134605909/1953073.pdfIn PDF document text
    • https://posapana.weebly.com/uploads/1/3/1/4/131454172/viwoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475995/normal_5fdad0460d73e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472479/normal_5fe67a5485d93.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/harbor_freight_13_drill_press_review.pdfIn PDF document text
    • http://donenufalu.rf.gd/90217719435.pdfIn PDF document text
    • http://juludiripo.myartsonline.com/newenufob.pdfIn PDF document text

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