Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a13b9a52e3ad3e2…

MALICIOUS

PDF

42.5 KB Created: 2020-08-26 06:30:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41f5efc58655084f9b0fb9cefa066092 SHA-1: 1318e854e2bfc5c9456135da843a8648e55c4fb3 SHA-256: 4a13b9a52e3ad3e288b57e2b25acc7177d09fb1c1bcb8a6f78e297d2874ae158
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic designed to funnel users to malicious content. The document body itself is heavily obfuscated but contains the malicious URL, reinforcing the attack pattern. No scripts were extracted, limiting the ability to determine further payload delivery.

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/pify?keyword=access+consciousness+foundation+manual+pdf
    • http://files.gmmcks.com/uploads/1/3/1/4/131437074/3354132.pdf
    • http://fesana.champion-art.net/uploads/1/3/1/3/131379061/f4561cf614d48.pdf
    • http://vabopu.hippo2020.com/uploads/1/3/1/4/131407227/kotujozugaju_kaxedamuwiro_xofuvowugafarow_zovimor.pdf
    • http://files.advancedanaerobics.com/uploads/1/3/1/3/131378899/1721378.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/21957862710.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/24114021955.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/tojabefesopugaferapuxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3519/7602/files/1464470595.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/mcc_codes_usmc.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/ca_final_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/nebidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/30530379863.pdf
    • https://cdn.shopify.com/s/files/1/0429/0989/2767/files/81311879229.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/thinkertoys_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/84609943314.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_off000065fb.bin
86a036542b466390fa2f55bec1a53a9055f7b1cc595c22e5ed821a90fab98268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FB 5196 bytes
font_01_sfnt_off0000778d.bin
ba3642869d7cf1dedc6f8341b32ae9cb7cb29087e94c737bf077d8e5944de77f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778D 10920 bytes

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