Malicious PDF — malware analysis report

Static analysis result for SHA-256 353192e38de3de54…

MALICIOUS

PDF

70.1 KB Created: 2020-08-26 03:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4229c590a1362ad598c38a1f984db101 SHA-1: b524269e054b35bd80ee73d5a4ed5e37af416498 SHA-256: 353192e38de3de548b8bc46e338e8e2d6e46f188500ec45f4f36a8688ef4e4e6
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a book summary. This suggests a phishing or malware distribution attempt. The PDF also contains a large number of links to external PDFs, many hosted on Shopify, which is characteristic of SEO link farm abuse to obscure malicious activity. No scripts were extracted from this sample.

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=resumen+del+libro+calidad+productividad+y+competitividad+la+salida+de+la+crisis
    • http://files.theangelicdebt.co.uk/uploads/1/3/1/3/131398561/visitiva.pdf
    • http://files.ssespta.com/uploads/1/3/0/7/130776661/1511188.pdf
    • http://files.cottonginmuseum.org/uploads/1/3/0/7/130740165/xesuder.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/79840228617.pdf
    • https://cdn.shopify.com/s/files/1/0434/3437/7372/files/je_vous_tiens_inform_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0455/4008/1829/files/oxford_picture_dictionary_second_edition_english_vietnamese.pdf
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/aweli_ya_weli_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/54082314238.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/cracked_ios_apps.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/71922635621.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/buworulevawoxelaxewuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6563/9073/files/bomb_calorimetry.pdf
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/21483566624.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_off0000cfac.bin
09b9dd8d4f824d5efe4f0a5870ca81741a1c947eee9fe65a50ebe025a533ed42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAC 5528 bytes
font_01_sfnt_off0000e25c.bin
7e380c01ca2002f53ced7b70a30d210c09dec554e194144b6dc83836dd5a361e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 11800 bytes

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