Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9e43326bcec10d…

MALICIOUS

PDF

41.4 KB Created: 2020-08-14 00:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3bfe439d9972dcb82388c14f07ab24 SHA-1: 49bba91712e9f8aa3b3aeafc3584314dadeac817 SHA-256: 1c9e43326bcec10d8d8fbb8b807842e14e307cde2756e4cad4b68f3f4bb1bae5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, indicating a link farm. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=injury+report+rams+vs+ravens`. The document body, though heavily obfuscated, contains text related to an injury report and the redirector URL, suggesting a lure to a malicious site. 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=injury+report+rams+vs+ravens
    • http://files.bingocompany.net/uploads/1/3/2/6/132681316/xekepadaxa_walow_bidikemekawuv_pagopi.pdf
    • http://files.awsupplements.com/uploads/1/3/2/7/132740659/jasevojobamixogopef.pdf
    • http://bilebodip.dragonmoononline.com.au/uploads/1/3/0/8/130814328/6146455.pdf
    • http://files.kellycunninghamcoaching.com/uploads/1/3/0/8/130874154/584879.pdf
    • http://files.amyjlane-instructional.com/uploads/1/3/1/4/131438217/6021412.pdf
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/mirezemimifuwozepapijimo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8470/0055/files/zinabuxokeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/28320212309.pdf
    • https://cdn.shopify.com/s/files/1/0432/8715/0752/files/pulsar_ns_160_spare_parts_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/juzopuzenafososokazulu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/electronics_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/62670656743.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/wotinikexolipogonozide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/69218119142.pdf
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/92653278505.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.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_off00006366.bin
b54b7375192848c38be401db6b76a86200aea2a86632afd2ec6c2a90386ac1d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6366 5108 bytes
font_01_sfnt_off000074bf.bin
b2c101ad7f1e7eeab33131bf1190046497c6a34b8179a2e0c0d69bdfdf841a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BF 10580 bytes

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