Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a6c9142656e67a…

MALICIOUS

PDF

48.7 KB Created: 2020-08-25 17:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d7b3840d80719f094ab15f434015eab SHA-1: 56428e74df53cf0af4b5a93593d975c885bab892 SHA-256: 64a6c9142656e67a44e5ed1b59b4ccc95d919c5a0e092fc4337eb82b248576a8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final destination of the malicious content. The document also features a large number of links to other PDFs hosted on Shopify, potentially for SEO manipulation or to host further malicious content. The presence of a malicious redirector and a link farm suggests an attempt to lure users to malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=adeptus+mechanicus+codex
    • http://wevino.animachristiretreats.org/uploads/1/3/0/7/130776008/4424f.pdf
    • http://files.francinesflowers.co.uk/uploads/1/3/0/7/130776449/xozepizet.pdf
    • http://mojejirar.stpaulsnundah.com/uploads/1/3/1/6/131636725/8307583.pdf
    • http://files.barryandrews.co.uk/uploads/1/3/0/8/130813738/wuzakaxoxubejod-limoxezifapek-pezuxofexekagoj.pdf
    • http://files.standrewscommunitycentre.org/uploads/1/3/0/7/130740097/4fb85a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6146/8571/files/92689222079.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7138/files/26734065173.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/fisomexumibitizosiziviku.pdf
    • https://cdn.shopify.com/s/files/1/0452/5208/3869/files/nigav.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/astm_b117_85.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/nightbot_delete_command.pdf
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/fesozimefedetimikemezume.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/25612527607.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/1720954863.pdf
    • https://cdn.shopify.com/s/files/1/0438/3028/0352/files/accounting_concepts_conventions.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5560/files/54371567990.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008063.bin
e467775de054d8f6fccf84e319435abb49b4ea3d4f2dc5d4788be58c113baa7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8063 5244 bytes
font_01_sfnt_off00009217.bin
3fc0a094fe76401c5fbd9f08e7dfa250d764ea857c05a03e3ac4ad49e3be5c57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 10508 bytes

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