Malicious PDF — malware analysis report

Static analysis result for SHA-256 6822593874cbdff7…

MALICIOUS

PDF

43.7 KB Created: 2020-08-11 16:51:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e8dbe36bbfc7860d30d8c5c715dca88 SHA-1: eed6ddbba024f45b6fcc6aeb685dc80c0284f168 SHA-256: 6822593874cbdff749f1c1a8853bdf2aa7477f34a2d4bb8260dde91c52e0227c
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=pneumatic+tmt+rod+bending+machine+pdf+download`. The document body also contains numerous embedded URLs, many of which point to Shopify domains hosting PDF files, but one of the primary URLs is a known malicious redirector. This suggests a phishing or scam attempt using a lure related to 'pneumatic tmt rod bending machine pdf download'. No scripts were extracted from this sample.

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.com/pify?keyword=pneumatic+tmt+rod+bending+machine+pdf+download
    • http://files.thefaithfulpout.com/uploads/1/3/1/4/131453588/9401086.pdf
    • http://files.tradewindsadriaticllc.com/uploads/1/3/0/7/130775111/90e7cefb0.pdf
    • http://nuzutes.latoyanelson.com/uploads/1/3/1/3/131380600/9418627.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3094/4671/files/emulate_raspberry_pi_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/11141683161.pdf
    • https://cdn.shopify.com/s/files/1/0430/8543/0945/files/77871346941.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/xikabiwepelaxemimavobasas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5498/9466/files/27756335901.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/gogovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5892/0610/files/nalutazujowipol.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/tezogelilizafovoxumen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pufabupenidobuxix.pdf
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/gezipibefawewamesim.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/losogefozaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/97670458759.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/sotitadu.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/wordly_wise_book_7_lesson_11.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9c.bin
ccca5488654beaf3fbefc4c8f37e7123f22242e5f8a7e7ebf492a0d456fa3c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 5624 bytes
font_01_sfnt_off00007f98.bin
e917f65994750cdaa889297335d815611348096a8b4b4546e52b862cec9232c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F98 9964 bytes

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