Malicious PDF — malware analysis report

Static analysis result for SHA-256 575dcef806a75b64…

MALICIOUS

PDF

46.9 KB Created: 2020-08-06 02:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 736d395414ea55d45cefe64d4f3ddcab SHA-1: 69af7e5e1178a0b47a0c115c1c54833636accc81 SHA-256: 575dcef806a75b64311345b141f88eef463bdd05d9a94df7134c06958b54a748
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files, indicating a link farm or SEO spamming operation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=theological+dictionary+of+the+old+testament+botterweck+pdf', suggesting a phishing or malware distribution attempt. The document body itself is heavily obfuscated and contains remnants of the malicious URL.

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.ru/pify?keyword=theological+dictionary+of+the+old+testament+botterweck+pdf
    • http://files.pennstatebabylab.com/uploads/1/3/1/4/131437379/7975213.pdf
    • http://files.mcyc.org/uploads/1/3/0/7/130775245/2086277.pdf
    • http://files.brittanyprimavera.com/uploads/1/3/1/0/131070459/serebatu-fewokagosomusib-biwofulonexik.pdf
    • http://files.jessicaleemanton.com/uploads/1/3/1/3/131384115/ledugirafunituzufo.pdf
    • http://pivefon.ahmedal-azzawi.net/uploads/1/3/1/3/131379246/6627810.pdf
    • https://cdn.shopify.com/s/files/1/0431/3595/9202/files/tijovawifukolatorize.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/xobofinij.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/ramakijewix.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6119/files/nubukeza.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/kamala_das_my_story_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/buzaxib.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/78301055707.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/16456591623.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/91039616955.pdf
    • https://cdn.shopify.com/s/files/1/0434/5020/4316/files/nazivatetiwuje.pdf
    • https://cdn.shopify.com/s/files/1/0439/0741/6219/files/data_analysis_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/4978/7285/files/5082104507.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_off00007643.bin
e5d21ef07d7a09dd75154c3377848db863b2dafb9fc1bb9debf990d2cf2c111a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7643 5916 bytes
font_01_sfnt_off00008a5b.bin
fbc7a4e913dd3404e6aecd5473a3c006eae8cc7817201ecbe9e04b4b4f27c36c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5B 10308 bytes