Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a6c147c93f42ed…

MALICIOUS

PDF

97.1 KB Created: 2020-07-23 22:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 048c395037a9404c13a1708746c8d1cf SHA-1: 04b0a260d1e3950b484f7643e5d4d494a8408544 SHA-256: f1a6c147c93f42ed7f3806ac2eb559526b12cc2083d16220997561bfad33be6f
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bajirao+mastani+movie+in+tamil++mp4'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=bajirao+mastani+movie+in+tamil++mp4
    • http://files.evge.us/uploads/1/3/0/9/130969873/9878695.pdf
    • http://files.sonic-delusion.com/uploads/1/3/0/9/130969704/kurokob.pdf
    • http://files.technocademy.org/uploads/1/3/1/4/131437457/xupope.pdf
    • http://files.michaelbrownslawoffice.com/uploads/1/3/1/4/131406762/xajixolaxexojobegu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/51587268808.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/mejelewubakurajadutagax.pdf
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/89113734386.pdf
    • https://cdn.shopify.com/s/files/1/0430/0872/1049/files/larizega.pdf
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/movijebugovefun.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/25420568451.pdf
    • https://cdn.shopify.com/s/files/1/0438/0049/4241/files/gimofupesujomekiduvexodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/fiparavosegudiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9606/4671/files/9266871514.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/rubogigekutofovuxiwa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/73832304059.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/nigusewusufep.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb9f.bin
2c04645a49252a692ee041ec4b480f230fcebc835ce377e4cbbad360dd355e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9F 5024 bytes
font_01_sfnt_off0000fc9a.bin
74a970302de4a4ea627fed45ffe925886a09a7b3e994ebd97d79346b63836b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9A 15024 bytes
font_02_sfnt_off000129d4.bin
6bae620e38efea4645b7d018af1a31d50278f867cf4098414a6078fd44ab836e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129D4 16160 bytes
font_03_sfnt_off00015bc1.bin
31b2655d926f0ebdbdb85b6f4bce17e3848625bbecbf807b054f75b2be36df83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15BC1 18516 bytes

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