Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ae1b2db9366427…

MALICIOUS

PDF

34.0 KB Created: 2020-08-20 10:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c58ab0a9d84a2db84f275e96d2ae1d8a SHA-1: f91c3a3fb6d83671b30c7bce0ae546207e7193a5 SHA-256: 59ae1b2db9366427556ca5c89ffcca067856598cecec121b0cb27cc4e8f2e69c
152 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 pointing to 'ttraff.ru', which is associated with malicious activity. Additionally, the document body contains a mass external PDF link farm, with many links hosted on shopify.com, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The primary lure appears to be movie-related content to entice clicks on the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=anjathey+movie++in+tamilrockers
    • http://files.hazelrosegibson.com/uploads/1/3/1/6/131606965/4481677.pdf
    • http://files.spencer-amaral.com/uploads/1/3/2/6/132681690/xezimili.pdf
    • http://files.bestiesbiscuits.com/uploads/1/3/0/9/130969448/vewapativo.pdf
    • http://files.alternativeaotearoa.org/uploads/1/3/1/1/131163667/topewejivi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/66591152139.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/16682766979.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/notojadudekixifimeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/principles_of_polymer_processing_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/upland_primary_school_bexleyheath_ofsted_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/43102432470.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/gokozupuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/badland_game_apk_free_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/jivak.pdf
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/vegan_keto_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/67467144465.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_off000047e9.bin
f8276bb01da3aeca84bd03ce3952daf3e6e94a1b646e74046b353c8a81a934e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x47E9 5328 bytes
font_01_sfnt_off000059eb.bin
eeb48a9df9c78a7e0c346406a9f9ecd2ea142fd7fbb14a5552d82a1040ed3700
pdf-font-stream PDF embedded font (sfnt) at offset 0x59EB 9776 bytes