Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba66e28b875a309f…

MALICIOUS

PDF

113.7 KB Created: 2021-04-03 16:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b7d4b64f8a74da274542fe9d48ff4058 SHA-1: df737e63d96f92df2dccc0a1578149db423fb8d1 SHA-256: ba66e28b875a309ffa55d8c80397de975f504b42253d9cc21c538bc82c797cf0
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' strongly suggests a phishing lure for free downloads, redirecting to the URL https://mezovuduw.ru/strik?utm_term=canon+xh-a1+manuale+italiano. Additionally, the 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document attempts to trick the user into executing commands, a common tactic in phishing and malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://mezovuduw.ru/strik?utm_term=canon+xh-a1+manuale+italiano PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402956/normal_602ed242cbb34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384164/normal_5fd639341f34a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_604de8012c78b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456998/normal_602948bd67fdb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412762/normal_6000aceb45f3e.pdfIn PDF document text
    • https://cdn.sqhk.co/miviluwulux/OFqjc3d/13650117617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_602e7a4e16a53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470218/normal_5feb70457a44d.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/7hiichd/report_reckless_driving_tennessee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386073/normal_5fc5bbd0bc168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451348/normal_5fdbb01bbda90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_60120ca37ce6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd676455a858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421780/normal_605ca19c4f6d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_6041d32dc1e25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_60539ca19efec.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/NgcGje4/12566428937.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/jeromopelurab/tevakaratiwox.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/10th_tamil_guide_2019_to_2020.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_off000180bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x180BF 4708 bytes
SHA-256: aed2c84d6f71113f663f46afcdb9f6516261d6a184ff3f991323bb8d5561770d
font_01_sfnt_off000190a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190A9 12116 bytes
SHA-256: 9ce315d443649e8e6625ea62a42a6451e8316bbd087907e342b6d72ec4471928

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