Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfff196c066db04…

MALICIOUS

PDF

50.0 KB Created: 2020-08-08 20:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89fb74620915d8a5396fb9c01da18842 SHA-1: 0e5f547c3fc455c5aeea36b266b0d5c8d7c4d338 SHA-256: 4dfff196c066db0483f8e3f505088e45e44a0e421a2b5c5af0437f59d2809d33
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=osaka+train+map+english+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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+train+map+english+pdf
    • http://files.stlpti.com/uploads/1/3/2/6/132683088/5502f414b.pdf
    • http://files.diobellescouts.org/uploads/1/3/1/6/131637774/f3fd83e6e8efbb.pdf
    • http://files.mexicansoldados.com/uploads/1/3/0/9/130969386/5179412.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/dozawuvowekidevoposo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/48603361394.pdf
    • https://cdn.shopify.com/s/files/1/0435/2956/8408/files/wipuwasuxi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/bleak_house_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/special_characters_on_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/xemanixav.pdf
    • https://cdn.shopify.com/s/files/1/0451/1108/3160/files/executive_protection_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/37063857314.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/21717441872.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/modified_barthel_index_scale.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/57198871744.pdf
    • https://cdn.shopify.com/s/files/1/0432/2276/1635/files/agamemnon_play.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/kijimu.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_off000063cb.bin
87fdcce4e3146104889b9a1994e576aa2493a5c1cfb856c3c6b06a25baaf0a51
pdf-font-stream PDF embedded font (sfnt) at offset 0x63CB 5544 bytes
font_01_sfnt_off00007678.bin
a4ab41183891c9602ddebe672e673048577da532578373c97eef8cebf6b18919
pdf-font-stream PDF embedded font (sfnt) at offset 0x7678 15132 bytes
font_02_sfnt_off0000a591.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449
pdf-font-stream PDF embedded font (sfnt) at offset 0xA591 16204 bytes