Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb6d99558b08a34…

MALICIOUS

PDF

42.2 KB Created: 2020-08-06 05:50:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68a3294117a29db0f22764d37514c0ab SHA-1: ebe3bb6f6e1b0725bf0664b161767c643808c850 SHA-256: acb6d99558b08a34085891ee06a428ca8097efe589d9b026eece7743ad46e930
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as content related to 'physical and chemical properties of alkanes'. One of these links, https://ttraff.ru/pify?keyword=physical+and+chemical+properties+of+alkanes+pdf, points to a known malicious redirector. The document's structure and the high volume of external links suggest a link farm or redirection tactic to lead users to malicious sites.

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=physical+and+chemical+properties+of+alkanes+pdf
    • http://files.artreasuresforever.com/uploads/1/3/0/7/130738887/a54f5be.pdf
    • http://files.tennisjoopbroens.com/uploads/1/3/1/4/131406348/8574453cfa.pdf
    • http://lesawu.cdnchiropracticwellness.com/uploads/1/3/0/8/130813612/ramalowowiw.pdf
    • http://files.mmvbrandon.com/uploads/1/3/1/1/131163867/5854372.pdf
    • http://files.riverchurches.org/uploads/1/3/1/4/131406274/jewisu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/rakiruluratajine.pdf
    • https://cdn.shopify.com/s/files/1/0428/5110/6972/files/36082023997.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/95077607150.pdf
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/farizomuxomudivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/vmware_workstation_15_pro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1097/4111/files/lakatobopuve.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/29896060497.pdf
    • https://cdn.shopify.com/s/files/1/0430/1645/4305/files/xogaraxawusovakigaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/gululepa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/8053238973.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_off0000657c.bin
8d078ca82a89c5e76782d8bc12d7f9718c56431568785038f79e1fcaa984d232		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657C 5564 bytes
font_01_sfnt_off00007845.bin
eeedb4379af7bdab1e0b6f6a36f53eb0b5fff7b88866a11a102dd60ccc8b1477		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7845 10352 bytes

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