Malicious PDF — malware analysis report

Static analysis result for SHA-256 56264ded91932c44…

MALICIOUS

PDF

44.8 KB Created: 2020-08-23 00:33:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e3094efe882dbfc39a1bf5f38a637f4 SHA-1: 91632ec3d8edb5e2c2bd0a00bf855baf7dc9c253 SHA-256: 56264ded91932c444b19b1e2874534264d7a35a70f026459e380a74e7eb1adab
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=girlfriends+guide+season+4', suggesting a lure to a malicious site. The presence of numerous PDF links indicates an attempt to manipulate search engine results or distribute content through a link farm, ultimately directing users to potentially harmful destinations.

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=girlfriends+guide+season+4
    • http://files.zach-koch.com/uploads/1/3/1/3/131379591/888c05.pdf
    • http://fevixusu.soundtrackmusic.co.uk/uploads/1/3/1/0/131070374/zusopevelesemopojof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3828/5725/files/ansible_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/xirezawasozuwezaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/booklet_template_word_2007.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/72913090037.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/lelanunemebovipalatifapi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/yasin_tahlil_latin.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/52445228540.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/14999195454.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/27243884319.pdf
    • https://cdn.shopify.com/s/files/1/0428/5621/8780/files/77819827601.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/astrology_answers_capricorn_horoscope.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_off0000731e.bin
532ddcd99955409299a0cb21b4cdb521a3a31ad55d3683615781df0039e08e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731E 5196 bytes
font_01_sfnt_off000084dc.bin
e6058ddffd55e00231bdd9840568c93dbac7a8f1dfeeadde1f86e63bc6bf4a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 9908 bytes

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