Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2bfe041f241c9f1…

MALICIOUS

PDF

43.1 KB Created: 2020-08-02 03:13:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4dbca892121aaa7f1f7c503d961fe61 SHA-1: 116c7663f580b5d6c8254a212e2e2d299a67bf8e SHA-256: b2bfe041f241c9f1654a14218c4c195ee80569a14e513a2637f5dd3618c58227
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL and a keyword related to Minecraft, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to distribute malicious content.

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=minecraft+how+to+get+command+block
    • http://files.razielleaigen.com/uploads/1/3/1/4/131454733/tanexajazi.pdf
    • http://files.doylearteducation.com/uploads/1/3/0/7/130775402/folotemuben-benexupofir-dofojawimuli-kilotanol.pdf
    • http://files.michaelmillermemorialfoundation.com/uploads/1/3/0/8/130874067/791098.pdf
    • http://files.saltysouthernroute.com/uploads/1/3/1/4/131453451/6530371.pdf
    • http://files.semindigenousmusic.com/uploads/1/3/1/4/131409200/291ec900.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/59083185835.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/rilamojef.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3045/files/unlock_layer_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/14814578741.pdf
    • https://cdn.shopify.com/s/files/1/0428/9072/3487/files/8727910834.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/12113432080.pdf
    • https://cdn.shopify.com/s/files/1/0437/8837/0077/files/55588605760.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/99029530411.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vololo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/getiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3437/7377/files/xitezuzununujed.pdf
    • https://cdn.shopify.com/s/files/1/0435/0440/2584/files/43240898287.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/
    • https://cdn.shopify.com/s/files/1/0437/0956/3045/files/unlock_laye

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a47.bin
fdfc9a40f415a2b08d817ce68f7f5139afca6161ccf64750b2f3f7e1e7021844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A47 5560 bytes
font_01_sfnt_off00007d24.bin
82a8459e93862ab15d9d90a1396fe70b6560fc29f11675b2031750a549f3c3a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D24 9904 bytes

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