Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff4cf471d5bcaabf…

MALICIOUS

PDF

50.4 KB Created: 2020-08-25 17:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bfebd70a8717e023c210978d6625492 SHA-1: a3bc839eee110cc4b6f8601e6954699d7742475e SHA-256: ff4cf471d5bcaabfe187a7db71f65dd3dead49b7218afcbe00ffcf8511f3f0cc
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented to the user as a list of cars compatible with Android Auto. The PDF also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is 'https://ttraff.ru/pify?keyword=android+auto+app+compatible+cars+list'.

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=android+auto+app+compatible+cars+list
    • http://wudefirof.dontbeacrashtestdummy.com/uploads/1/3/2/7/132740285/jozuj-zuguzun-jebevo-wimuvitosu.pdf
    • http://files.mildlyadventurous.com/uploads/1/3/0/7/130775171/8081846.pdf
    • http://wawatuwew.downtownmiami.net/uploads/1/3/0/9/130969742/35688075e85df.pdf
    • http://files.uclagoingglobal.org/uploads/1/3/1/4/131452733/tutajomajaz-wenoneno.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3062/files/16836582845.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/97309059316.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/96314034472.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2480/files/pipebomereda.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/vigabafixizubupes.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/pajepisipovadoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9856/1959/files/approved_document_b_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0432/3852/3047/files/sizigababalugukudewa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/laziximanumoxulixomama.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/ed_miracle_shake_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/36714477191.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_off000086ea.bin
1829f36d2ef18e7da9c8f58f430d26b79bba74247ab82b78d6c0b6695dfa8810		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86EA 5348 bytes
font_01_sfnt_off000098ef.bin
5e278b8efc6ed1101c8a9651cabd3482c112bdb1c47ab48a3b458de7df5db6e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98EF 10364 bytes

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