Malicious PDF — malware analysis report

Static analysis result for SHA-256 3185cc69317c77ab…

MALICIOUS

PDF

49.7 KB Created: 2020-08-08 23:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ed5c004f33701df9f09c61da567234b SHA-1: e677f42bc78f991a2040ae2ae98170a4d718e3e2 SHA-256: 3185cc69317c77ab322b9611d92fd0e55ba35cc88bf3f33a52c07df2efdbf161
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to a known malicious redirector, and another flagged a mass of external PDF links. The document body contains obfuscated text and the primary malicious URL, suggesting an attempt to lure users to a compromised site. 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=canalisation+of+imports+pdf
    • http://files.themodernpunch.com/uploads/1/3/1/4/131454221/8c167ab9cd0b03.pdf
    • http://files.standardtimewatchrepair.com/uploads/1/3/0/7/130775506/goxop-xunenopidi.pdf
    • http://files.salentoby5.com/uploads/1/3/2/6/132695242/bibaxasize.pdf
    • http://files.walkaboutfarm.ca/uploads/1/3/1/4/131453036/4724014.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/futulixokizelavuwod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/56729149892.pdf
    • https://cdn.shopify.com/s/files/1/0438/4453/4429/files/solasopiposigir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/ganaji.pdf
    • https://cdn.shopify.com/s/files/1/0449/4006/6971/files/fallout_4_give_command.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/26130079016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/vumagameweweliselibida.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3894/files/dte_mba_cet_2020_result.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/39994422608.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/audi_q5_manual.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_off000085d9.bin
a2a97b458882e47a8a6282d855ba4ba17737cb554bbe74a047bd6abb68e05989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D9 5092 bytes
font_01_sfnt_off0000970e.bin
c1db693d523f1df58d8a4c844c8f66e8624c17400101a72c4f0a96d6399a4af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970E 10412 bytes

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