Malicious PDF — malware analysis report

Static analysis result for SHA-256 4384b1baec8f8027…

MALICIOUS

PDF

71.2 KB Created: 2020-12-19 15:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5526109ba162d537be374038d87622c5 SHA-1: 11a42e330669735616e02ddda44bead75737fd3b SHA-256: 4384b1baec8f8027717a2b199def7349f93d0fb3a52ac9811d7d2f2ef0f7514c
154 Risk Score

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 embedded URL 'https://traffmen.ru/strik?utm_term=daenerys+targaryen+jon+fanart' is the primary indicator of malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links suggest an attempt to lure the user to a compromised site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=daenerys+targaryen+jon+fanart
    • https://biwilodumiz.weebly.com/uploads/1/3/4/3/134319983/3177888.pdf
    • https://nenopejir.weebly.com/uploads/1/3/4/6/134603535/rudifowanag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3bee40d7-5c5e-4014-89c5-529e57375291/civ_5_bnw_victory_guide.pdf
    • https://static1.squarespace.com/static/5fc0f171c14dfd36fef1b44e/t/5fd0d86012264b5dfdd63f69/1607522400872/178209898.pdf
    • https://static1.squarespace.com/static/5fc0c666116eb00e3c4b5099/t/5fc4a401f8cdb769c676ca48/1606722561784/wujejelanigipi.pdf
    • https://s3.amazonaws.com/jubiferekaka/22321017828.pdf
    • https://uploads.strikinglycdn.com/files/f5fab80b-71b9-4ab6-a818-50faf17007a3/gadigojatenizugoze.pdf
    • https://static1.squarespace.com/static/5fc532aedf132613bbd9a2a5/t/5fc951555355a32d7a340966/1607029080195/19042466532.pdf
    • https://s3.amazonaws.com/xijuxosisomuna/42192668555.pdf
    • https://static1.squarespace.com/static/5fc5c75ce2fce462bcad5d60/t/5fc75c4193ad1a48121a83d1/1606900801987/negopolorisajafevenibol.pdf
    • https://uploads.strikinglycdn.com/files/d9faeaeb-6ea7-46d8-8fea-fb8eabcf3a1a/45665911321.pdf
    • https://uploads.strikinglycdn.com/files/19416a88-c824-418e-952c-1a2658036c1a/flakboy_2_unblocked.pdf
    • https://static1.squarespace.com/static/5fc5b1b8239b07229151fec3/t/5fc73e780791337046e13d27/1606893185051/23477503910.pdf
    • https://uploads.strikinglycdn.com/files/f83b9eed-e229-4e9d-a784-5a88838c924a/17900965267.pdf
    • https://static1.squarespace.com/static/5fc0f975bf71053ccb109642/t/5fc15a3bfa04221c715257d9/1606507068166/williams_world_607.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daac.bin
14a1788aff7fce1e2073f011f836d4b8e8d63c5bad280a15d8af42c59e9df2f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAC 5080 bytes
font_01_sfnt_off0000ec1c.bin
53df9c80222e78937ed05fec8d6657133a812bb682d5e810d903f6d1818cf251		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1C 10528 bytes

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