Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82ac7da42ee07ce…

MALICIOUS

PDF

74.1 KB Created: 2020-12-01 00:28:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7102046b44bad55cac9e21140a35c6d4 SHA-1: 2d7ee7c98f8636763f8237cdf490e8e9234a646a SHA-256: e82ac7da42ee07ce8a525fbddbef5e7c903020e50e5f2a494fd10ee9ee124fd5
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://gettraff.ru/strik?utm_term=ram+jack+west+reviews In PDF document text
    • https://mujubafajereked.weebly.com/uploads/1/3/4/5/134595908/sixogasup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413236/normal_5f992714de45d.pdfIn PDF document text
    • https://xowilululevala.weebly.com/uploads/1/3/4/0/134017879/1220126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5fa65495cd8b0.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/9158977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5f9c6bde2c7f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391921/normal_5fb2fef7ca56c.pdfIn PDF document text
    • https://xujurewe.weebly.com/uploads/1/3/4/8/134865393/41c31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zalomi/toy_blast_game_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/692a7b11-ce3e-420d-866a-b687545bb9e2/niwadire.pdfIn 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_off0000e4e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E1 5212 bytes
SHA-256: 56b63f688d7794ae9dad8d2241bb88ebc2b3d34fa72ddd037b3ae18bcbc5acda
font_01_sfnt_off0000f6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A4 11140 bytes
SHA-256: cc6d842442b95758211fc01c2744c8a3b3cc237e0e6a1aa5153499ef6d43a43f

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