Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e8e92287743b3f0…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 16:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7010d56686b90c28dd8bc88d22ac64fe SHA-1: a2c0328ffc525ddc80a8509cf70b518e7233c592 SHA-256: 8e8e92287743b3f0dd9bd6bdb3e4c903543d8bbf4fb710b87cefaa68749053c8
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Certificat de vente de terrain pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links to external PDFs, many hosted on Shopify, further supports the link farm heuristic.

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=certificat+de+vente+de+terrain+pdf
    • http://files.fullerevents.com/uploads/1/3/1/4/131437680/gurudin.pdf
    • http://files.nest-of-the-rat-king.com/uploads/1/3/1/4/131454316/6d86c7a657cd168.pdf
    • http://files.bvcpsedtech.net/uploads/1/3/1/6/131607662/vetovaked-ketamaneta-salosuriner-sofaluj.pdf
    • http://files.avcri.com/uploads/1/3/2/8/132815828/5e5c8b.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/nowum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevimija.pdf
    • https://cdn.shopify.com/s/files/1/0434/3414/7989/files/85270729177.pdf
    • https://cdn.shopify.com/s/files/1/0430/2598/9785/files/wulemorozoxoxulopajezuvix.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/79265872460.pdf
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/95697289753.pdf
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/42950467572.pdf
    • https://cdn.shopify.com/s/files/1/0434/5223/5938/files/kikenodivaxorovogopep.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/64868997005.pdf
    • https://cdn.shopify.com/s/files/1/0431/8137/5648/files/altruismo_definicion_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/26293701952.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/usf_campus_map.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_off00005c0a.bin
fdceb4c1f30cdf0afb083d69e25fbe259614286960fa621ffc93673ebffee2fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0A 4904 bytes
font_01_sfnt_off00006ccb.bin
967694378b397d0ca4c8f43284358612159d4c0f6c47a510613488b095c00ddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCB 11528 bytes

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