Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e6ceee9cc6dc37…

MALICIOUS

PDF

73.6 KB Created: 2021-03-11 12:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 75cc21ed69b96c99f5cccfffbe801c98 SHA-1: 95b7eba5f5fc8a5650b187439e090921f2bcba5a SHA-256: 64e6ceee9cc6dc37d714f398f5cc056b92712521058a8cd799d60a669abfbaa0
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8702

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/award?keyword=jurnal+psikologi+budaya+organisasi+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4484156/normal_60254b4564441.pdfIn PDF document text
    • https://luzurojavozajin.weebly.com/uploads/1/3/6/0/136090511/midilag-dupolew-joseb-divenajev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378831/normal_5fcd0a2b3faaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368238/normal_5fc645eec15a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_6008a05a673db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450045/normal_603774ed6b715.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481056/normal_5fcc2b6267893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466657/normal_603824122708b.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/xonitune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498986/normal_5ff95db497fdf.pdfIn PDF document text
    • http://kudonolenukiv.22web.org/89067217777.pdfIn PDF document text
    • https://fokinovev.weebly.com/uploads/1/3/0/7/130775288/194306.pdfIn PDF document text
    • https://velupilarase.weebly.com/uploads/1/3/5/3/135341581/sorop-jorufimisideb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405197/normal_5fe4ab08de417.pdfIn PDF document text
    • https://xodimiteti.weebly.com/uploads/1/3/0/7/130776847/joduwemedogukeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ceb666a-fe56-4bd7-9338-ff475d67a665/ronetubaxaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286e3e7a-04bb-4c02-8409-7c6ecfdef193/palideviga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7254765-9173-4628-b03b-2df3b59c7f70/nosoloxurazigorumawuji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd013968-b50b-4622-a9ea-ba499f97559c/best_stock_watchlist_app_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac32425-8a7d-45d5-966c-2c736f8ff9df/krik_krak_full_text.pdfIn PDF document text
    • http://bikutuvuxaxixo.epizy.com/93389511941.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE88 5504 bytes
SHA-256: 73cf49746fe5982cffcadb2af47e4b81142d138e96f9ad02b7ab678afa247f59

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