Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29716e4e0a2ab47…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 11:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75c10d954cb37457489895ce4b467af6 SHA-1: 695bab539d5f8b64e6bae174d17166f51ebdb1eb SHA-256: a29716e4e0a2ab4724f438ceb3d06d231d42a81c608e2c4baac19a6fb1d730d2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious infrastructure. The primary malicious URL is https://ttraff.com/pify?keyword=invictus+poem+questions+and+answers+pdf, which is likely used to obscure the final malicious destination.

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=invictus+poem+questions+and+answers+pdf
    • http://files.smithsstationruritan.com/uploads/1/3/0/7/130775817/fodosofodoso.pdf
    • http://files.leannewaterhouse.com/uploads/1/3/0/7/130775519/xelopevowubisasu.pdf
    • http://xusam.wetnosespa.com/uploads/1/3/0/7/130738629/1839165.pdf
    • http://files.thechampsvoice.com/uploads/1/3/2/7/132712235/pomobesikedurupur.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/reviwinewuwinoluwigawab.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/73461325464.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/basox.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/tokujerafavovasixiro.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/zesamenuvobunegiva.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/zepekerijarizono.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/lemavamakuvonivadi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9619/3686/files/bonjour_tristesse_romana.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_off00006108.bin
f5bfc638b48da48d9ee9203f155f0d283750973b6d10ebf3fde4b47489359f1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 5484 bytes
font_01_sfnt_off000073a4.bin
ed9094ab2e8c8804076a575ae3de4c7a04bcb47e53cd1034fc239a175ba76081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A4 10368 bytes

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