Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6727ffc0a44a6e6…

MALICIOUS

PDF

47.1 KB Created: 2020-07-27 01:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1758b4e1a93b006db206dd4c86b3390 SHA-1: 7f3fb833562974b2a49c38813dbacb5ffd8f90be SHA-256: f6727ffc0a44a6e67491746a66534590ca609a267944a7c2e7fb8cf3c903b868
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell T1071.001 Web Protocols

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to 'Walmart supply chain management system pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or phishing pages.

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.cc/pify?keyword=walmart+supply+chain+management+system+pdf
    • http://files.northernhut.com/uploads/1/3/0/9/130969855/popokovudoxuxide.pdf
    • http://files.ptpuk.co.uk/uploads/1/3/0/7/130775123/89bfce0c.pdf
    • http://files.sanpeteseamless.com/uploads/1/3/1/0/131070331/3db239c8c.pdf
    • https://cdn.shopify.com/s/files/1/0435/8668/3037/files/bukigimefosavuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/womejigunonaxunegofise.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/90551546059.pdf
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/jafaxanusebikeserivite.pdf
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/87274269399.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/39531997119.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/zaruwafew.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/relaxed.pdf
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/30713491585.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5312/files/3109909479.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/12591699114.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/85870551743.pdf
    • https://cdn.shopify.com/s/files/1/0433/6209/1163/files/61518035193.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_off0000774d.bin
b31c7db57d62fe52b7d2c98f411dd40b356913d9e559283a2ced78a5d4c4d0c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 5456 bytes
font_01_sfnt_off000089c3.bin
47e4acc18e0f15271200577bf3dcfec85b8e37704b994894ca1582a6ce59a589
pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 10724 bytes