Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecc66f6fa8a3582…

MALICIOUS

PDF

73.6 KB Created: 2020-12-19 04:52:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d30893cfa7a9d876ca302f81bda51503 SHA-1: 1c573ef58c5c519bc31d44dc3eb9ab9a52488662 SHA-256: aecc66f6fa8a35828eed0175df3516a76cc3a3937c5d314bb4b661c4bfc380da
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'traffmen.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'the son of god free download', likely a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=the+son+of+god+free+download In PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/052e2dc75d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_5f93a2f3121f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426269/normal_5f9f5559a05fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499021/normal_5fc98b7fcdea4.pdfIn PDF document text
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/69264409e4e3e.pdfIn PDF document text
    • https://zunurevupuvofas.weebly.com/uploads/1/3/1/4/131438471/xexapiwotusidufaluz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_5fcfb074c543a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381321/normal_5f96901defe6a.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/dekefomivupe-kovak-talajonipa-fedebiraroz.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/9388ada0-618a-431d-95a7-906a4a378714/38520965924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbaa098c-bdfb-43ce-b14a-9e6ad5c50563/27981347381.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E3 5208 bytes
SHA-256: 0cd3f9bfa249c04064100f4ad57260053218d78c0760f2e83c294d2b2aed4812
font_01_sfnt_off0000d69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69E 1796 bytes
SHA-256: 68bbe42c93759ab90c218695aa25c1747b40456063d11b0ac06b51d2514fd3e6
font_02_sfnt_off0000df29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF29 10908 bytes
SHA-256: 488909b429e09baa9535e7096af611150e30229dc490b9c20f766234ba71cde3
font_03_sfnt_off00010475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10475 16088 bytes
SHA-256: 482b7b4fee51162e6a5d82ff10b0db2f6da6482a74a1be5a66137bb6d850bf40

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