Malicious PDF — malware analysis report

Static analysis result for SHA-256 069c2c8291d487a2…

MALICIOUS

PDF

46.7 KB Created: 2020-08-29 05:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a402b8f19b0432878bd4f429ac391093 SHA-1: 81a3748ebe04053f69c4b420e25cae1145b7c326 SHA-256: 069c2c8291d487a23398c3f2b999aa127388d1f30814694a26a871e2c6e533e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary links, 'https://ttraff.ru/wix?keyword=crowley+thoth+tarot+deck', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the nature of the embedded links and the redirector URL strongly suggest an attempt to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=crowley+thoth+tarot+deck
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_d60a498265e24d389fd958850a23d40f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0e989ece0c043408877d2cb320f75f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_acbb15457539486ea5a29a4648c0df70.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20fde12943f47099338d386a33b78d0.pdf
    • https://cdn.shopify.com/s/files/1/0441/3777/5256/files/98831007618.pdf
    • https://cdn.shopify.com/s/files/1/0435/4493/6599/files/69714557576.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/jurnal_pengertian_angiospermae.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/jubivisejezajiwimuxowa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/abc_chemistry_book_download.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba93b535eeeb4a2d9bc6324b2a4f0474.pdf
    • https://static.usrfiles.com/ugd/b8c837_9698d9746ec44ffb9c18193521fbafa5.pdf
    • https://static.usrfiles.com/ugd/b8c837_942c5375e538440f8284ddcaf11f1afd.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7d1e08b2b22426390614c8d885f4e7b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9febdd514ec6458a97a8231d5d83d1f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_90377477b0904e5ababda945b3dd6dce.pdf
    • https://static.usrfiles.com/ugd/b8c837_75f2379b2b204ca4b35a4f382879b9ca.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a2c.bin
b3df42b6cac30015235cb1cb70a8789f08b23e5fa6aea841f67082c1b5d87c0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2C 5012 bytes
font_01_sfnt_off00008b43.bin
e3faaa37a214c61551ad57b17830efe22e0fab9657f527574dea4fee9b7f4a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B43 10316 bytes

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