Malicious PDF — malware analysis report

Static analysis result for SHA-256 952aeca07080c613…

MALICIOUS

PDF

52.5 KB Created: 2020-07-28 10:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9309a065b07397608e3b24253baba4fd SHA-1: ed1a95b1d520e6d6b5eb9c07b24b918adb9c0d6a SHA-256: 952aeca07080c613644b464d5981b9780add58452af61d39e8a9ee6a853cc251
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for 'pubg mobile weapon damage spreadsheet'. The document also contains a large number of embedded PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is ttraff.ru, which is flagged as a redirector.

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=pubg+mobile+weapon+damage+spreadsheet
    • http://files.semperfryllc.com/uploads/1/3/0/7/130739142/rewunopilavotiv_kilepoxelekeg.pdf
    • http://files.unraveledportland.com/uploads/1/3/1/1/131163540/673295.pdf
    • http://files.themabusecode.com/uploads/1/3/1/4/131454165/8244054.pdf
    • https://cdn.shopify.com/s/files/1/0432/9730/8840/files/vabirunob.pdf
    • https://cdn.shopify.com/s/files/1/0439/2353/8088/files/92544718064.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/32798666132.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/javisa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/327323711.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/sakis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8132/5980/files/juvuluvaxokepez.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/gumafofeged.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/muzujetowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/tekubibobewixatalojugijux.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/37409355139.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_off00008730.bin
f8f5ebc2ce82dfb3bdcebcd2e1ca378109bb7b27944b302bef9651934b10be0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8730 5488 bytes
font_01_sfnt_off000099a7.bin
fd12d44c50eb360ec303d53db2d4084be71dd1772a783ec10f64121a1de93b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99A7 13712 bytes

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