Malicious PDF — malware analysis report

Static analysis result for SHA-256 860d2c34a7fb87ee…

MALICIOUS

PDF

48.9 KB Created: 2020-08-19 09:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40b899f40ad758677eba681f7d46444e SHA-1: 5e42834f80b454c06171e578311aee098a78724a SHA-256: 860d2c34a7fb87eeee934fb9ff525b11f8a19cc640faeb9fe16babbc8262fe0e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=revenue+forecast+excel+template'. Another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains references to 'revenue forecast excel template', aligning with the lure observed in the malicious URL. No scripts were extracted from this sample.

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.ru/pify?keyword=revenue+forecast+excel+template
    • http://defovapuf.cycotron.com/uploads/1/3/1/3/131384401/10bde815e69620.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/65341454724.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/tilefafixusij.pdf
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/jujegugotakevusugi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/mitufisovifefewujozipiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/what_is_polymorphism_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/44285591229.pdf
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/1887126439.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/nofugofezumere.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/50214193266.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/76722332257.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/subemepizetolojat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007352.bin
9eb335bd89a643cfa66a308322901c7025df84c690b6f93aa5a0ae6eb84ff0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 5132 bytes
font_01_sfnt_off000084bd.bin
447bb91f84337cf25d731ad2b9c8764df9c1509e51f5a89407a3c4b54396793f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84BD 10472 bytes
font_02_sfnt_off0000a869.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA869 4324 bytes

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