Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a83c6e54dad0a8…

MALICIOUS

PDF

51.3 KB Created: 2020-08-08 00:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69d8e9866d8ca04febdf1b97ac8bb95d SHA-1: 544ede507cbaa5a42938b0b50e23644b96ea5d4a SHA-256: c8a83c6e54dad0a81748efe09dd529283cbd671df41a4a6877e2f9c264a64863
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=most+inspirational+books+of+all+time+pdf', is a redirector designed to lead users to potentially harmful content. The document's structure and embedded links suggest a social engineering tactic to lure users into clicking malicious URLs, likely for phishing or malware distribution.

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=most+inspirational+books+of+all+time+pdf
    • http://files.familypracticecenterofnewtown.com/uploads/1/3/1/3/131379268/6995709.pdf
    • http://files.chetsnouffer.com/uploads/1/3/0/8/130814308/nulidefo-nejotus-dunuxutaboke.pdf
    • http://files.scboa.net/uploads/1/3/1/4/131407635/zobixu-nozizi-jubeteruranek.pdf
    • http://files.christopherlaine.net/uploads/1/3/0/8/130874148/5b82892b4f96d.pdf
    • http://files.mcfieldassociates.com/uploads/1/3/0/7/130775268/wezogidotonopotisi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1576/4128/files/35710087239.pdf
    • https://cdn.shopify.com/s/files/1/0437/8994/2945/files/definition_of_science_laboratory.pdf
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/xotaniwawadofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8103/1064/files/gavigutagudumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/bow_tie_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/letter_of_intent_for_graduate_school.pdf
    • https://cdn.shopify.com/s/files/1/0432/2692/3172/files/body_mind_relationship.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/28365760109.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/28627830048.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/ligasofof.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2309/files/xivovadikopoxokasifu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/68780292468.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_off00008a27.bin
6d951df2befd85c7e68a034dd8efcffbb1c5342faeff69064f313c81617c0adc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A27 5396 bytes
font_01_sfnt_off00009c71.bin
fe52057609ae0ce869851583da61790af0047c61a8ea3c855e56f6ac1fbcb95b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C71 10240 bytes

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