Malicious PDF — malware analysis report

Static analysis result for SHA-256 86fe9c043b568b56…

MALICIOUS

PDF

60.7 KB Created: 2020-12-19 00:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 35a44899dcdac5227c26b7e347d2605e SHA-1: 3c4360cad861c7bf8812e3d3fee3093549c68266 SHA-256: 86fe9c043b568b56b660a539fe1fd0cd3a39e3100e5610b1f6f959dcd09dc6e5
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 indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL, 'https://traffmen.ru/123?utm_term=mecanica+de+fluidos+potter+pdf', is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further payloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=mecanica+de+fluidos+potter+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380530/normal_5fa93ddf47810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459326/normal_5fb3d8c02a1e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424672/normal_5fcbd3bdd8bdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491687/normal_5fbf01c6e71f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5fc1e591252b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_5fd66403783e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386839/normal_5fc8c4ddd962b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5fc2010f8159a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406789/normal_5fcb9abf0f02c.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/e982a7c3-8e5f-40f8-a01e-063851731f8b/comment_trouver_tous_les_diviseurs_dun_nombre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150803bf-a57a-4550-8852-3b1cab6ec208/zufovarinavokiru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc39e3c5e8e827d429ee1bf/t/5fccde037ae85b53b2913e66/1607261700383/16258747585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53481841-62c5-4e66-82ab-29c96d30e708/menoat_river_botw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda38321-943a-48b4-8d67-615db16a8195/vixutovofavit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e7c468612547ed6b246b/t/5fcc8dd1978da30c56f7c4bf/1607241169999/80145588205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079b553c-8083-4b8e-b561-767b5fe5f4fe/desagagurujanimesefo.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_off0000b0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0EA 5156 bytes
SHA-256: 46b92e9ef25975c2fb1c3907bccbf8c8f24c38cbaf4a9cbf6f448a79cf7c6ed0
font_01_sfnt_off0000c292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC292 10456 bytes
SHA-256: 49fbd8c3c41f83032036eb3bfb0943876cd7620d026f3eeb227e93e32c40aa42

Open this report in the interactive analyzer, or submit your own file for analysis.