Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5751c3bee03880d…

MALICIOUS

PDF

38.0 KB Created: 2020-09-02 19:04:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92fe2502ba7ca2c6f837eb132036e058 SHA-1: b28759f5210a93767e8c35d3258a39d06286bf7c SHA-256: b5751c3bee03880d8ff372fdb54f4c0c86cc88985cf2b6108e33573ddac43811
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, 'https://ttraff.ru/wix?keyword=acpi+smo8810+dell+driver', is the primary indicator of malicious intent, likely serving as a lure for users to download further malicious content or be redirected to a phishing site. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack. 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/wix?keyword=acpi+smo8810+dell+driver
    • https://static.usrfiles.com/ugd/1e4819_dc1cd0b74e3143e29a479e7a82afbf7f.pdf
    • https://static.usrfiles.com/ugd/4aae87_d7422b9d6dfe418b8c078668176d8b15.pdf
    • https://static.usrfiles.com/ugd/b8c837_88218eff24bf439d88857ad7bd5bbd51.pdf
    • https://static.usrfiles.com/ugd/cf79db_3989f5c14e0b439fa765a7adc8028a75.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/gixotobegebixiwovove.pdf
    • https://cdn.shopify.com/s/files/1/0466/4459/2805/files/frontier_tv_guide_tx.pdf
    • https://cdn.shopify.com/s/files/1/0435/9487/5039/files/endnote_x8_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/9265/5780/files/90648284702.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/17275786895.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f8ed2b1abe54ebb89ad6e7405b5138e.pdf
    • https://static.usrfiles.com/ugd/0aab01_96271f9b95244f37819345039b8d63d8.pdf
    • https://static.usrfiles.com/ugd/ab059d_47bf8cadf78143499bf23fcc61b57e3f.pdf
    • https://static.usrfiles.com/ugd/95089d_f0076cd248df4697a097835557296416.pdf
    • https://static.usrfiles.com/ugd/ca300b_02acfa4e163a4d7e80b9c260b126d2fd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/62923244863.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/astronomy_for_dummies_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/4445/1990/files/77814014165.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_off00004e05.bin
d1809a4c81441efcc5914e8fa97f28786c68df4f1348112277136184b9756b1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E05 5444 bytes
font_01_sfnt_off00006084.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 1800 bytes
font_02_sfnt_off00006911.bin
654a1a1070a521a5b8ba919ebdd47ed7f5cf6fdceeebc3dc64e3ab4d243e9918
pdf-font-stream PDF embedded font (sfnt) at offset 0x6911 9868 bytes