Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb1d0677502134ef…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 23:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1a96561dae45779bc2d1387a43a21e8 SHA-1: 059ad3d7a1e8bb974d26ced01e9917c1c2b70ac5 SHA-256: cb1d0677502134efaca8dade5682df297b237ab9c856ba8de0632dd5bbe1701e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous URLs, including a primary redirector link to 'ttraff.ru' which is associated with malicious activity. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign links.

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.ru/pify?keyword=chromatography+lab+report+conclusion
    • http://files.twtlministries.com/uploads/1/3/1/8/131871874/vokovigakat.pdf
    • https://cdn.shopify.com/s/files/1/0438/3742/3776/files/biodiesel_production_from_fungi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/performance_appraisal_sample_wording_decision_making.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/xijadasivubapivizom.pdf
    • https://cdn.shopify.com/s/files/1/0432/8774/0576/files/segujisegubefoluxigere.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/44695664228.pdf
    • https://cdn.shopify.com/s/files/1/0436/6155/7913/files/73765802364.pdf
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/luzagawedokidiwubuvivaxom.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/anger_management_self_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/tokefegemuzujulogoxogufa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/51703688852.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_off000067a8.bin
7549dea228eb9de6d5b22052cb7c436434fa14106410740ffb8e200834f19551		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A8 5496 bytes
font_01_sfnt_off00007a38.bin
a8b447bed3e1164ade82c40052523e59bb6056a3c11b3fd22d364a57d61ece03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A38 10040 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.