Malicious PDF — malware analysis report

Static analysis result for SHA-256 83df73c18c58cdae…

MALICIOUS

PDF

36.0 KB Created: 2020-08-14 20:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47e46ed8785b02a3505a1632e4154bd1 SHA-1: 47c611e9d06c1219e8cf7911bbc2b012eeb93a9d SHA-256: 83df73c18c58cdae2ce9f7655df90e041023d70894723674bd8c4d91e216b331
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to a 'Titan chronograph watch manual' and includes the same malicious URL. The presence of a PDF link farm heuristic further indicates malicious intent, likely to distribute or mask the true destination of the malicious link.

Heuristics 3

  • 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.
  • 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=titan+chronograph+watch+manual
    • http://files.nadragons.org/uploads/1/3/1/4/131437513/8457352.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/79217977109.pdf
    • https://cdn.shopify.com/s/files/1/0453/8600/6696/files/core_strengthening_exercises_for_back_pain.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/40890654940.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72619586694.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/c_programming_mcq_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/roriviwafojuxiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/fazotiwetorutoworajoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/battery_retail_park_birmingham.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/96124919976.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/53238349462.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/sinoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/xigipi.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_off0000500c.bin
8547678ef7c6d816680647e8b43597c9d794d7e42fcc7fa1e8a275402d53a402		 pdf-font-stream PDF embedded font (sfnt) at offset 0x500C 5208 bytes
font_01_sfnt_off000061a0.bin
4936d40fae635d8387b2d2e7bce83679ff0113d84a43bc0aa2d66a5420f4f620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A0 9876 bytes

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