Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e7df1d19a6effd…

MALICIOUS

PDF

43.4 KB Created: 2020-08-22 02:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 506aa9cda2509a1a88ace0c84074a161 SHA-1: 5af9d105bac61c28f85f4902e36d34d9332677aa SHA-256: b3e7df1d19a6effd172a52aa9eb06d9880599ffaebc92bd3bfb8e0b202fc6030
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic identifying a malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure. The primary malicious URL identified is ttraff.com, which redirects to a page related to 'autodesk design center'. The presence of numerous other PDF links suggests a link farm for SEO poisoning or traffic generation, with one link pointing to a potentially malicious domain.

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.
  • 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
  • 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.com/pify?keyword=autodesk+design+center
    • http://pepom.margaretglaeser.com/uploads/1/3/0/7/130740444/af3b304cb5.pdf
    • http://files.madebyloulou.net/uploads/1/3/1/8/131871891/59bfb6ba928ffb6.pdf
    • http://files.andrewfaulkphotography.com/uploads/1/3/0/7/130738912/mubokeb-jorojunopimeka-xuxidejixoxez.pdf
    • http://files.michaeljonesmusic.com/uploads/1/3/1/3/131397946/ab165baa7.pdf
    • http://files.carolynjarvisartist.com/uploads/1/3/0/7/130740092/6215330.pdf
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/histologia_del_pancreas_exocrino.pdf
    • https://cdn.shopify.com/s/files/1/0433/4390/4927/files/algebra_2_textbook_texas_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/70869973426.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2728/files/banks_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/dee_dee_blancharde_autopsy_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/jelaroladimilesalos.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6299/files/39771958712.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/50203010384.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/lavorakifagitolomubunak.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/kenividowowezexivefelepek.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_off00006707.bin
92990ff3f07c60f3abbea91a658494afdd2bd0f4e191783e7f587ced6bbbe39b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6707 4920 bytes
font_01_sfnt_off000077d1.bin
eeb497c4356a08543c84df273c36080748cda02d4868cbf648d484fc21bcb8d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 13196 bytes