Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c8064d4a223dac…

MALICIOUS

PDF

38.5 KB Created: 2020-08-17 09:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89a357222771140af05b31ecc477efe1 SHA-1: 10b5f50e859f3798e408f321140c6717c7eab681 SHA-256: 43c8064d4a223dac00bb365a0f56f4dba2c40f4aed1fbe4be38676e0bc64ef27
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, many of which are to Shopify domains hosting PDF files. The primary malicious URL identified is https://ttraff.ru/pify?keyword=uap+ac+mesh+pro+datasheet, which is likely used to redirect users to further malicious content. The document body contains garbled text but includes the target URL and a benign-looking PDF filename, suggesting a 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/pify?keyword=uap+ac+mesh+pro+datasheet
    • http://files.cdgpc.com/uploads/1/3/0/8/130814644/vivosobulotu-penujiza.pdf
    • http://dawozure.thecostaricakid.com/uploads/1/3/1/0/131070089/wasudapedulojakumiv.pdf
    • http://wifagob.en.msp-lawoffice.com/uploads/1/3/1/4/131452825/c7f8072c3.pdf
    • http://files.rakshitestates.com/uploads/1/3/1/3/131380171/2637696.pdf
    • http://files.fineartbyrachel.com/uploads/1/3/0/7/130775959/vumadolapabi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6172/9685/files/canada_food_guide_daily_protein.pdf
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/sys._argv_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/2096/6293/files/25058650225.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/kufosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/burket_s_oral_medicine_10th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/piweluxobaxaluzelipevebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/selirasibano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fadanamimurusekebunom.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/29245016014.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/96096867928.pdf
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/electrical_engineering_mcqs_by_m_handa_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/28397604485.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_off000057d0.bin
9b0c981f7c567b85f30d7ee1ad0417287fe13155ec8cdb0505dc57a842eb849b
pdf-font-stream PDF embedded font (sfnt) at offset 0x57D0 5272 bytes
font_01_sfnt_off00006996.bin
6d94845828e451f421c1bb751603730a6e682704f1d37a925ab69628bfeb8c3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6996 10488 bytes