Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc8987df66e317a…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 13:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 657d2adf508aa5acb10c1cc7bce5fac2 SHA-1: 73c5599158188fcab9d5afd052730660a49d080b SHA-256: bcc8987df66e317a35dd2773d370520569f848b3893364528b90428198560002
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=desactivar+buscar+mi+dispositivo+android'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0437/2581/5959/files/mamusomijafororokiv.pdf' being one of the first identified. The document body, though heavily corrupted, contains fragments suggesting a lure related to disabling Android device tracking, further supporting the malicious redirector intent. 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=desactivar+buscar+mi+dispositivo+android
    • http://lasolegab.silvermoonkennels.com/uploads/1/3/2/8/132816202/megafatuxozi-welugoxuje-daxovoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/2581/5959/files/mamusomijafororokiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buxigol.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/37067948827.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/nabuzuvabuminoziseko.pdf
    • https://cdn.shopify.com/s/files/1/0430/4368/4503/files/zobawuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4620/files/tosefutilepigema.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/85978474497.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/xekovugabagizev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdf
    • https://cdn.shopify.com/s/files/1/0432/8089/2057/files/staphylococcus_aureus_skin_infection.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/vetegobomonu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c5.bin
0e42f69f7d63b73ec987290bc7404dfb49a40b6a3dfdc6f5e1ce4494d252b26c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 5268 bytes
font_01_sfnt_off0000758e.bin
3062ec56ba9ebd687b9e01d4a5636dacdc0e9f79a71705debfad88cdee309a97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758E 11044 bytes
font_02_sfnt_off000099b9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99B9 4324 bytes

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