Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5eb498b9ce264e6…

MALICIOUS

PDF

55.1 KB Created: 2020-08-21 13:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05f51368dfbb478fdd8a3b484d877836 SHA-1: bb4e47d9593aac00cce13d32a68a9e8a8198e1de SHA-256: a5eb498b9ce264e64cfdaabe33a4a2035fb30b3acf86ed0edbe62f10dcf904c5
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a manual for a Dolce Gusto coffee machine. This indicates a social engineering lure to direct users to malicious infrastructure. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO poisoning or link farm tactics.

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.cc/pify?keyword=manuale+dolce+gusto+piccolo+de+longhi
    • http://files.fatshanrecords.com/uploads/1/3/1/3/131398406/291125.pdf
    • https://cdn.shopify.com/s/files/1/0438/9722/5368/files/kasafo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1109/files/xipiwaromokas.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/49941835262.pdf
    • https://cdn.shopify.com/s/files/1/0440/7640/0792/files/gmat_official_score_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/7835/2034/files/54784134255.pdf
    • https://cdn.shopify.com/s/files/1/0431/5620/9819/files/46123595471.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/22909992834.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pamuzinesikajojefex.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/66961628338.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/risk_factors_of_hepatocellular_carcinoma.pdf
    • https://cdn.shopify.com/s/files/1/0434/6652/2790/files/fallout_4_ballistic_weave_mod.pdf
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/how_to_edit_a_large_file_for_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9142282406.pdf
    • https://cdn.shopify.com/s/files/1/0438/6314/6656/files/anaplan_training.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/vitonoj.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_off00009893.bin
639d37e39557085a606a2b316ba7fb0aea81e4c65a4fe62296f641ccb6a4431a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9893 5244 bytes
font_01_sfnt_off0000aa6d.bin
ffa83871e4cdd499e9e76b6c4c2bd545eeb7cbe2bd7d987eded7f0e03480afea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA6D 11308 bytes

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