Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6213e08ad1e8e7…

MALICIOUS

PDF

70.9 KB Created: 2020-08-22 08:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd419bf383fb7b0eea4f544955b16f48 SHA-1: 144f916a059fa4f07ecfe2758cf08d5dfe63b2e7 SHA-256: dc6213e08ad1e8e73c3b60adc6b51287846f36ec5cc1a375a733257939d96454
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is embedded within the document body, disguised as a link for 'ben ten 10 games free'. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. 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.cc/pify?keyword=ben+ten+10+games+free
    • http://files.aletalederwasch.com.au/uploads/1/3/1/3/131379396/6680275.pdf
    • http://files.sydneyschmeltz.com/uploads/1/3/1/4/131406295/penotid.pdf
    • http://files.calkdr.com/uploads/1/3/2/8/132815882/reribizuk-vevamikovaz-pomebolofilebuv-basukuvogokaxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9848/9503/files/25206546590.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/agriculture_problems_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0438/4600/8982/files/diplomatic_immunity_album.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1861/files/cardiovascular_physiology.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/78586034892.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/gejipifakovudususemel.pdf
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/download_alcoro_em_portugues.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/42162686303.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0440/6601/3349/files/81493558001.pdf
    • https://cdn.shopify.com/s/files/1/0435/1341/3791/files/43786296829.pdf
    • https://cdn.shopify.com/s/files/1/0437/0651/5611/files/python_probability_density_function.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/
    • https://cdn.shopify.com/s/files/1/0428/98

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d887.bin
e52088bff17bb1495411f7039e71e82a0e1a3f44a307e87138ceac926ee3c952		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD887 5300 bytes
font_01_sfnt_off0000ea7f.bin
ef7f9d60ed70a798161fb510d8b4adf3d1425771c0f4603c24a529abf913f34b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 11004 bytes

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