Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3f3f9eac58b000…

MALICIOUS

PDF

50.7 KB Created: 2020-08-15 04:41:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c47714138328eadcdcb4449573de12 SHA-1: 023864c4a7b098e2fc367fcb3fa5b19e4ea759f2 SHA-256: ca3f3f9eac58b000ae85e7ca9632df56173751d11d0f20aa79ac7e97a55a7ed4
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at ttraff.ru. The document body, though partially corrupted, includes the same URL and a title suggesting a "shopping map" lure. The presence of a link farm heuristic indicates an attempt to distribute malicious content widely. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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/wb?keyword=akihabara%20shopping%20map%20pdf
    • http://files.gogirlempowerment.org/uploads/1/3/1/3/131384359/tizizozewaxol.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/wuxifazevi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/43612352452.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/24532742199.pdf
    • https://cdn.shopify.com/s/files/1/0434/7310/9152/files/96878213142.pdf
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/possessive_case_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/university_calculus_early_transcendentals_2nd_edition_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/all_archie_comics.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/liliwimu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/75773707291.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e1f.bin
a97940ab3200133ffdcd36fb619c7a3be9454283602e9a964559eea06cff59b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 5204 bytes
font_01_sfnt_off00006f7a.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7A 1800 bytes
font_02_sfnt_off00007807.bin
52ee3ee40ed78b51c78c5bf965eb78c9478a44b30e990491e53f9d26f9f6b10a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7807 10008 bytes
font_03_sfnt_off00009a7f.bin
ac699f0f700e5a69495d6d7731b97e226de4512093a90df50a9d188313105efd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7F 16108 bytes
font_04_sfnt_off0000af46.bin
781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF46 4324 bytes

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