Malicious PDF — malware analysis report

Static analysis result for SHA-256 0106064afdd421d6…

MALICIOUS

PDF

32.6 KB Created: 2020-09-19 00:22:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e58d651cb80e45232355fd99986e063f SHA-1: bd2b4fee7bca0cb3c93702bc0fbb21e4e66a6911 SHA-256: 0106064afdd421d6b3561f3f4b54a12d2da70dc588a3bde4a8866419bcf880c1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=success+auto+wash+and+detail+ames+ia'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0459/6039/6959/files/lusuzewavife.pdf'. The ML classifier also strongly indicated maliciousness. These factors suggest the PDF's primary purpose is to lure users to a malicious site.

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.me/wix?keyword=success+auto+wash+and+detail+ames+ia
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0459/6039/6959/files/lusuzewavife.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/fenekera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1402562920.pdf
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/66439202466.pdf
    • https://cdn.shopify.com/s/files/1/0429/5534/1977/files/15948362582.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/a_flawless_plan_eso_puzzle.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/30192240127.pdf
    • https://b7042b08-41af-4e58-8245-a436562f0cf6.filesusr.com/ugd/33a2e4_568e98d04d4e4171969c6020fde845f4.pdf?index=true
    • https://b2a1dbb7-d734-41a1-8234-4b7d55ef8546.filesusr.com/ugd/46bfb0_64453ca1124e452e9dccbc5705962c94.pdf?index=true
    • https://fc6b6ed1-8958-40ee-931e-21f501b87d21.filesusr.com/ugd/0c8cc8_4d1c49bc73b247af88c54aa47496b01a.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/4472/3098/files/figab.pdf
    • https://cdn.shopify.com/s/files/1/0476/7154/1926/files/convection_in_the_mantle_worksheet.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000418f.bin
482bc3247b25f712bff470fb7cfb8e174a0b776822c2db9987658d7efff611c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x418F 5280 bytes
font_01_sfnt_off00005371.bin
d448a7e81570952b950a4a6f28930a53f81522942696a274ac3158e4a22334d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5371 9996 bytes