Malicious PDF — malware analysis report

Static analysis result for SHA-256 b75a790a2671984c…

MALICIOUS

PDF

54.4 KB Created: 2020-08-29 21:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3af36a68710f266e389f6c3b5edf874d SHA-1: 7640847d527faffcce021d28dbf0d00832941348 SHA-256: b75a790a2671984c6902541be63d9f8e6610da61ec22248caa6310a1f5032005
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=2008+cadillac+sts+navigation+system+manual'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. The document body itself contains the search query and mentions the PDF generation tool, reinforcing the lure.

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=2008+cadillac+sts+navigation+system+manual
    • https://cdn.shopify.com/s/files/1/0429/1959/2103/files/dinosaurios_para_colorear.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/alexandria_egypt_map.pdf
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/skip_list_implementation_java.pdf
    • https://cdn.shopify.com/s/files/1/0429/5403/1270/files/xuferozovi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7050/4608/files/ponujufare.pdf
    • https://cdn.shopify.com/s/files/1/0437/9725/0210/files/kazogedejepipi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0575/2997/files/77714818452.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/relative_dating_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/21698666635.pdf
    • https://cdn.shopify.com/s/files/1/0450/2441/1806/files/59019851744.pdf
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/carcinoma_de_clulas_escamosas_da_pele.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/numbers_and_dates_in_english_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/ata_2020_thyroid_cancer_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/zuburusowisukaxojika.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_off00006e24.bin
6b85a387c656e1568e58f975fdeb996b83b8d28230b315910e09f46e8fff5e7c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E24 5696 bytes
font_01_sfnt_off0000816c.bin
b40015ed6297dca9cc04e5280dcee89f4762f3809a27086d543c58690cee25bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x816C 16876 bytes
font_02_sfnt_off0000b572.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727
pdf-font-stream PDF embedded font (sfnt) at offset 0xB572 16060 bytes