Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed3669a94a5ff8f4…

MALICIOUS

PDF

72.2 KB Created: 2021-01-14 23:29:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3adf498d7eec4ce5e781aab082460938 SHA-1: 99bce401f08afc19a62c52ab24ab278a3fd21a9b SHA-256: ed3669a94a5ff8f4a0aab49116774811e1ff673115072e3c4e1e28153b0f00cd
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=management+reporter+ax+2012+port'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier and ClamAV also flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://traffmen.ru/aws?utm_term=management+reporter+ax+2012+port In PDF document text
    • https://site-1206872.mozfiles.com/files/1206872/fact_sheet_template_canva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_5f884e555eea2.pdfIn PDF document text
    • https://site-1176205.mozfiles.com/files/1176205/paxetune.pdfIn PDF document text
    • https://site-1168299.mozfiles.com/files/1168299/kilurorozapuxaxatudijuzun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5fc2cb2e3d8e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_5ff8b632020e9.pdfIn PDF document text
    • https://site-1173302.mozfiles.com/files/1173302/hot_wheels_id_cars_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391013/normal_5f9abee0dd7c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370533/normal_5f8885bcccfa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482207/normal_5fadfb5083127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f8729bb09f10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fd68e2de97b6.pdfIn PDF document text
    • https://site-1175166.mozfiles.com/files/1175166/nurse_uniform_colours_northern_ireland.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_5f9ac8299b771.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_off0000df3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3F 5328 bytes
SHA-256: 7a1ebc2edae431d910accc443eae23d09b5575ba719e96613d59af20d4433cb0
font_01_sfnt_off0000f160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF160 10236 bytes
SHA-256: 0ab083fd05ba0fc9c6ed9323d9508a3006ffe6be948725b83020759bb3df14e9

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