Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d222679a9975894…

MALICIOUS

PDF

53.8 KB Created: 2020-08-09 15:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 612f8a572e4a3d8eddfd8bc6da517613 SHA-1: c30e6c8d3f726f274999e1587bfee9ccbae32087 SHA-256: 4d222679a99758945f33ffe8cd5edf47bbada04685005a7c878e195432b4762e
120 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 pointing to 'https://ttraff.ru/pify?keyword=literary+devices+notes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The document body contains the malicious URL, reinforcing the redirection attempt.

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=literary+devices+notes+pdf
    • http://files.northernfitness.net/uploads/1/3/1/4/131437246/9588946.pdf
    • http://files.blogbyrain.com/uploads/1/3/2/7/132740549/jomepemudupez.pdf
    • http://files.medfieldk8pto.com/uploads/1/3/2/7/132710563/moridifikope_jowimetes_dogurum.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/calculus_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/risekumomivedopela.pdf
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/peberajoze.pdf
    • https://cdn.shopify.com/s/files/1/0447/9533/0717/files/diablo_3_whirlwind_build.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/23295531556.pdf
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/php_conferences_2016.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/luxojifexadok.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/80358187033.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/carcassonne_scoring.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/4072354534.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/windows_7_enterprise_key.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_off0000956b.bin
03c808c615beae26f5b56b55e7b6b700204de0728e303edeca5791fa1060d3e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956B 5220 bytes
font_01_sfnt_off0000a74f.bin
855c0c03405cbcf997ccf81acaa953fa522dd71afe81e37ab86abda36735cbd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74F 10120 bytes

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