Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5ae3c56098b339…

MALICIOUS

PDF

36.6 KB Created: 2020-08-30 02:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05c65d0cda5c7d7c520eac50dd124fe5 SHA-1: c31f7bcc7b97c25044d16ad52a04e9877c92baba SHA-256: 2c5ae3c56098b339f5866892dc5d571f96ff6cead4a5245fc3b4aef9521c18a5
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or SEO poisoning tactic designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to a vehicle owner's manual and the malicious URL, reinforcing the lure.

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.ru/wix?keyword=2009+mitsubishi+galant+owners+manual
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/saginaw_movie_theaters.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/saxovawozasexefisikowobes.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bepowaxop.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/91548149997.pdf
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/62695693850.pdf
    • https://static.usrfiles.com/ugd/fe83c3_2c1e636285844b2d8f77617590b5742e.pdf
    • https://static.usrfiles.com/ugd/353d00_d4412e0405d34868aef0d1a3d7393f75.pdf
    • https://static.usrfiles.com/ugd/b8c837_f303b18b54a047ce8b31f22858190580.pdf
    • https://static.usrfiles.com/ugd/b8c837_0430d59fc6b84d73877ca041e394734c.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/accidente_vascular_cerebral_hemorragico.pdf
    • https://cdn.shopify.com/s/files/1/0461/4268/5337/files/93726962312.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/tumbling_e_chart.pdf
    • https://cdn.shopify.com/s/files/1/0439/2304/6568/files/96749740633.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/677358746.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/electrical_and_instrumentation_engineering_books_free_download.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_off0000508c.bin
a2ed82db850c8c5b0050f7ec088a704f8efd402801a855a11a464d60fba463f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x508C 5664 bytes
font_01_sfnt_off000063aa.bin
0cda2fdd9fd74a693f19ac67a3263e08b695b4e5514c1f9d83e12122e95fa05d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AA 9876 bytes

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