Malicious PDF — malware analysis report

Static analysis result for SHA-256 7111d30705b1f9dd…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 22:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06ab0854ac97a75d2bbd6a348243631a SHA-1: 678521ff4d1280db24814378dd6c43806d408d6a SHA-256: 7111d30705b1f9dd46cfa64a7cd0072d0671c39439cce5dd44e324eaa531a6f5
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.ru'. It also exhibits a PDF link farm heuristic, indicating it contains numerous external PDF links, many of which point to Shopify domains. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the nature of the heuristics suggest a phishing or redirection attack, likely intended to lead users to malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.ru/pify?keyword=conference+programme+booklet+template
    • http://files.kurtmorris.net/uploads/1/3/0/9/130969352/natodesafoji.pdf
    • http://files.adams-aardvarks.com/uploads/1/3/1/8/131856050/5e31407f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/85425633142.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/document_cerfa_cession_vehicule.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/finuretikiretu.pdf
    • https://cdn.shopify.com/s/files/1/0461/7099/6889/files/mi_gente_cedric_gervais_remix.pdf
    • https://cdn.shopify.com/s/files/1/0441/1208/5144/files/36235597967.pdf
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/5265742893.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/bexano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/36833469546.pdf
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/78924278761.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/nulalilo.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_off0000613c.bin
96c53e1c546a558db9fdfb6ea957ae1441437d679021849aea884420424eb225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613C 5124 bytes
font_01_sfnt_off00007292.bin
9e223ad93d3eedd92a735d202cbf600166344f5236b69d74f2f1dd9451a2f57c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7292 10112 bytes
font_02_sfnt_off000094e3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94E3 4324 bytes

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