Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f80c52cffcb8e75…

MALICIOUS

PDF

63.9 KB Created: 2020-08-24 21:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99ee82ce1aa7dc4a302171d7037eea0d SHA-1: f18d6046c8387ef4b95438c4df21afcdddfb3348 SHA-256: 1f80c52cffcb8e75d5480202450f58449665f7a176405d3e7ad0f311c694da3f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=chinese+series+movies'. This URL is presented within the document body, suggesting a lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely for SEO manipulation or to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=chinese+series+movies
    • http://rerasomo.jpascalcreations.com/uploads/1/3/1/6/131637814/povuluses.pdf
    • http://sozigezi.apricity3d.com/uploads/1/3/1/3/131383444/gozomam_farafibanep_peweronon.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/lanosukasuwiwokela.pdf
    • https://cdn.shopify.com/s/files/1/0436/7846/6201/files/20017157790.pdf
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/36093985134.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/wogokobenetejomonebuvawem.pdf
    • https://cdn.shopify.com/s/files/1/0436/1263/5298/files/renotilasonuzetamubatel.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/13207544615.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/mafitizabem.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/mobowexuzuvaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/7210/2308/files/wijiliwexanur.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/womejukilekefeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/5629/0206/files/53976935350.pdf
    • https://cdn.shopify.com/s/files/1/0436/1873/0147/files/how_to_use_multimeter_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d64.bin
2e08c94cab335f2a42daf893c36f7a510783c17c15e5ae4adf1287af4ec5e58b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D64 15648 bytes
font_01_sfnt_off0000af69.bin
dea5da57a205926bee0f4114cc1ff410b4c02eff195b878d531199b4b1b0f1f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF69 4648 bytes
font_02_sfnt_off0000bf07.bin
3b8c2f53cb58e1e690cc737ffa8903534a07f36fc3ced010009231c6c66ce4ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF07 15896 bytes

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