Malicious PDF — malware analysis report

Static analysis result for SHA-256 f719907fc6507ba5…

MALICIOUS

PDF

45.8 KB Created: 2020-07-29 08:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dd43c8a9acf8542432eb7be0d6d9b1f SHA-1: afdbf88184cfc83e4d3b0236f970c626ec45e864 SHA-256: f719907fc6507ba54f7d6a0e3028cde4d94a65bf02b9aa660e8aade79a4d9c66
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with a heuristic firing indicating a 'PDF SEO LINK FARM'. One of the primary links points to a known malicious redirector infrastructure. The document body contains garbled text, suggesting it is not intended for human consumption but rather to host these links.

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=picsart+apps++old+version
    • http://files.macklandscapemanagement.com/uploads/1/3/1/0/131070078/sikusavenuto.pdf
    • http://files.rmhsperformingarts.com/uploads/1/3/1/4/131453650/somudizevikigupijas.pdf
    • http://files.friendsofraymondjames.org/uploads/1/3/1/4/131437515/3447622.pdf
    • http://files.whatisib.com/uploads/1/3/1/3/131380128/nijosogupuxawufozep.pdf
    • http://files.visualisenewzealand.com/uploads/1/3/0/9/130969389/7966416.pdf
    • http://files.friendsofraymondjames.org/uploads/1/3/1/4/131437515/344762
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/dawogenaretobadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5317/files/vetuzuluzafuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7298/7046/files/26800107270.pdf
    • https://cdn.shopify.com/s/files/1/0429/2693/2124/files/52173689644.pdf
    • https://cdn.shopify.com/s/files/1/0432/0146/2436/files/xazudogevimazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/71235630675.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/21854306253.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0856/files/48905674522.pdf
    • https://cdn.shopify.com/s/files/1/0440/2115/3957/files/4831897939.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/sogejuxuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/vimajunitifezuzi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/molotudesodivefobedizum.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_off00007517.bin
d351bdcaf675671075e2378544682c36bcc5dd51bc167cbec6cb3a393e5f4e94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7517 4916 bytes
font_01_sfnt_off000085d0.bin
630e6e8e17c0cbfe6f9a8b03566c4849fbf0ec29879837f02747b7bcce660352		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D0 11100 bytes

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