Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01f7bf11b29edb4…

MALICIOUS

PDF

34.9 KB Created: 2020-08-18 23:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8060e6217f5d6245c1ac9f4bd1436ab SHA-1: c3a5daaae985c799e484f57ffb6dc40670cc981c SHA-256: d01f7bf11b29edb4521947fd28dd0621c1fb4b2bd795883616040ef1e7c9cae3
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.com, which is disguised with a game-related keyword. The document body, though heavily obfuscated, also contains this URL and references to game save files, reinforcing the lure. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure malicious activity.

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=commandos+strike+force+save+game
    • http://files.libertyshelties.com/uploads/1/3/0/7/130776393/kasanilowaza.pdf
    • http://files.lindleyroadhouse.com/uploads/1/3/1/0/131070971/jazafozulopodulena.pdf
    • http://files.sgsmi.org/uploads/1/3/1/4/131452982/d72ea5.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/daranakakulipuruzirudiwe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/83395672196.pdf
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/96657142626.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/86880105594.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9589/files/86632407959.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/physically_based_rendering.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/77343887382.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/block_diagram_of_cathode_ray_oscilloscope.pdf
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/memebozi.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_off000049fa.bin
32d8a0a94df14a5e0c7cc772dd599f8be3a96dd941288e5bb2f5d9fa89bbbc65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49FA 5336 bytes
font_01_sfnt_off00005c14.bin
53e60e3693aa2d7d5b292e9275ce17bda6b5d607629819ba07dbd6b4e70227bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C14 10272 bytes

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