Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb19f20bb1aff50…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 10:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49bee9e945961b0440a94a3d5e380262 SHA-1: 27a0973c6957d20fa25352ec6ea188a9563da7d2 SHA-256: abb19f20bb1aff50608edf339da10e2c9c4c75a12f521f43bd22894926b6a927
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm. One of the primary links directs to a known malicious redirector service, 'ttraff.cc', which likely serves to obfuscate the ultimate malicious destination. The presence of numerous external links suggests an attempt to distribute malicious content or lead users to phishing 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.cc/pify?keyword=gmp+who+guidelines
    • http://files.suleamath.org/uploads/1/3/0/7/130740573/toxegiz_balulugof_zemokotigab_guzaletoma.pdf
    • http://files.learningsupport.shenfieldlearning.com/uploads/1/3/0/8/130874026/terif.pdf
    • http://files.kjosa.com/uploads/1/3/0/7/130775831/9ba22.pdf
    • http://vojozumep.jackiespencerbeatleguide.com/uploads/1/3/1/3/131380600/827eeba.pdf
    • http://files.spaceliftinteriordesign.com/uploads/1/3/1/3/131379971/8fc1e5788.pdf
    • https://cdn.shopify.com/s/files/1/0433/8915/7532/files/31613935990.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/82825154871.pdf
    • https://cdn.shopify.com/s/files/1/0437/0631/9002/files/computer_lab_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/docker_kill_all.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/45242722217.pdf
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/dosufuko.pdf
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/77012466482.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/zupajimokurezinuweruwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/zimazuximikesamaxapu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/pumugowat.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/binezokanubizawizij.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_off00005da3.bin
da3065510d2938861c3374067ca14d6dc24b422f1db3d1c909b2ec6fa7605efa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA3 5192 bytes
font_01_sfnt_off00006f49.bin
95264bcc119c013c6d754111d8d6c898c1d7baca5730f1b03df6ea16878e368f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 10388 bytes

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