Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0759188ec879d2…

MALICIOUS

PDF

53.1 KB Created: 2020-08-17 15:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 505fc37ce719219a2ab28c890145a4d1 SHA-1: 00564ae21baf516dfca758c05a7c25d66e4ebaa6 SHA-256: 1b0759188ec879d2244554e52975c95df61a1d91c3c54056721ed3e3490b7559
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=osaka+sightseeing+japan+guide'. This URL is likely used to redirect users to malicious content. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to Shopify domains, but the primary malicious indicator is the ttraff.ru redirector. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure beyond the malicious link.

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=osaka+sightseeing+japan+guide
    • http://files.danielstorage.com/uploads/1/3/0/9/130969190/1243452.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/4122735867.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/25974922520.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7294/files/12927138646.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/exemple_de_bulletin_de_salaire_en_cote_d_ivoire.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/55886807091.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4069/files/junigeporigasejije.pdf
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/aiag_spc_manual_latest_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8594/files/dabemelebej.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/pumepum.pdf
    • https://cdn.shopify.com/s/files/1/0440/7666/2934/files/english_for_public_relations_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/sam_hyde_ted_talk.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/4_caliphs_of_islam.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008497.bin
d10b3d1ad344b4e184f71be66468d38d911eb0b3a8a3b560d5ffa58fc3ae1918		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8497 5032 bytes
font_01_sfnt_off000095b0.bin
96436ecabf0b0821ee862a6b19e886ffadcb2af47452572fe97ed01ca152e005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B0 10488 bytes
font_02_sfnt_off0000b952.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB952 4324 bytes

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