Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e6c01cae15217d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-24 18:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d18a06c0ee9bf9c4e47f91d8a3aeb5c7 SHA-1: 8c82293cc4eb7d7ddd975d90089c190edbc8be70 SHA-256: d3e6c01cae15217db3ae884140f9812da9c86f392ad8f8fba7d9869cb0c171ae
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/pify?keyword=3d+animation+app`. This indicates the document is designed to lure users to a malicious site, likely for phishing or malware distribution. The presence of numerous other embedded links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for the malicious redirector. No scripts were extracted, but the primary attack vector is the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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=3d+animation+app
    • http://files.sisterjane.org/uploads/1/3/1/4/131437418/3b9c15fef976.pdf
    • http://melopij.vestedenergy.com/uploads/1/3/1/4/131408899/xafamiwalatevo-zowenamuzozula-serisob-jogokar.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/39701636706.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5351/files/4745481141.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2247/files/chain_rule_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/maryland_ifile_login.pdf
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/peretug.pdf
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/canvas_business_model_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/cbse_guidelines_for_class_12_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/wukakovovevesi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/viva_video_maker_for_laptop.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed4.bin
7609615893fb7b5eaca7792571d937cc810fe7a9679f3270e5c0996637fee7b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 4868 bytes
font_01_sfnt_off00006f45.bin
ebef0708d2f3b60b9bab627db792762b90b9f2331ce4bb9aa47b3f00c8d24676
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 10012 bytes