Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44e2ac90146e9d6…

MALICIOUS

PDF

45.3 KB Created: 2020-09-08 23:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3d7d3f9279452733c109fcbe48259ab SHA-1: 9e6b7a2e6e4b2628f7f9c33cb89961c62214cf36 SHA-256: b44e2ac90146e9d6742876b4d6d9190470bf8097f6d6036736dd4d51485ea721
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. The document body, though partially corrupted, includes text suggesting it is an 'Italy visa application form sample', which serves as a lure. The presence of a mass external PDF link farm further indicates malicious intent, likely to distribute further payloads or engage in SEO poisoning.

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.me/wix?keyword=italy+visa+application+form+sample
    • https://cdn.shopify.com/s/files/1/0462/5157/3402/files/23385333285.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/65030989514.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/poster_bodoni_lt_bt_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/vubetefa.pdf
    • https://static.usrfiles.com/ugd/7a7fb1_ebeba69ccc5e4c0a947c7af701657495.pdf
    • https://static.usrfiles.com/ugd/63d3ad_3b6d2616d2da4100bf965e68ab4b03fa.pdf
    • https://static.usrfiles.com/ugd/73c254_c316e7cd3c3f4db38e5ce7770ef79c64.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/pixidujala.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/ganoderma_mushroom_cultivation.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/jofipikat.pdf
    • https://cdn.shopify.com/s/files/1/0462/6635/1773/files/79894384706.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_off0000736c.bin
21fb749d77e7eb5d5469444634ecc0b1388cdf3057a61b5e556362e8d57c4f07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 5260 bytes
font_01_sfnt_off00008550.bin
65b68750e8e9735947e294aad0e87d95a6e75797418664c4372c4282cccd3e5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8550 10420 bytes

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