Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e35a140e6eabe01…

MALICIOUS

PDF

70.9 KB Created: 2020-11-14 04:03:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac956826f40d7aca80509bcf4f1608bf SHA-1: f4a76e77048681e180ae73f0cac3d5c8a20a18bb SHA-256: 7e35a140e6eabe017b116bf2f7fb4c4d71227dcfe1f423f45cde39b7066b7f62
154 Risk Score

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 'ggtraff.ru'. This URL is likely used to direct users to a phishing site or download further malicious content. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/aws?utm_term=avatar+games+free++for+android
    • https://cdn-cms.f-static.net/uploads/4448740/normal_5f9f822963e8d.pdf
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f9cb17392ab1.pdf
    • https://torawatuxopo.weebly.com/uploads/1/3/4/3/134379163/tegudivojexudu-zulogotuj.pdf
    • https://wilitixovin.weebly.com/uploads/1/3/4/3/134351513/3347333.pdf
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8a62cc6b4c6.pdf
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/1c7a6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/buganabowumujef/55487808598.pdf
    • https://uploads.strikinglycdn.com/files/b1945174-1611-46e6-a37b-430a6a8d60a7/watch_naruto_shippuden_ep_175.pdf
    • https://uploads.strikinglycdn.com/files/8c329d8d-fd43-4ec8-a34e-3a73f23feed2/nico_the_pro_sword_quest.pdf
    • https://s3.amazonaws.com/vavabi/vakinobumesojid.pdf
    • https://s3.amazonaws.com/tadovu/17516933479.pdf
    • https://uploads.strikinglycdn.com/files/5c27442f-849d-4022-a67f-06944c73f562/audiosource_amp_100_for_sale.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd62.bin
d078634c0e6038cc56ff03ba8dc953558b90686cedb7443a6e3ffaf65d99b3b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD62 5032 bytes
font_01_sfnt_off0000de6a.bin
ebd41569471d2c3bdc84d46d9337387f74810778286431100d2b3fda26986e64
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6A 10040 bytes
font_02_sfnt_off000100db.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x100DB 4324 bytes