Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c696d11267c3dc…

MALICIOUS

PDF

42.5 KB Created: 2020-08-15 03:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9124074f80c85be247a0f5aa0972e1a4 SHA-1: ebe9e8a9cdd6702d39e8a7c3a256c3d5f9cb0fff SHA-256: b0c696d11267c3dc9f24c40b032f818c2f5f6ab0d39ca4af780e12af9188ee04
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, embedding numerous URLs. One prominent URL, https://ttraff.ru/pify?keyword=new+kindergarten+teachers+guide+2017, is identified as a malicious redirector. The document's structure and the presence of this redirector suggest an attempt to lure users to malicious websites, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of direct payload execution.

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=new+kindergarten+teachers+guide+2017
    • http://porez.mccallumjones.com/uploads/1/3/1/4/131438641/ca6de.pdf
    • http://zagavof.upscaleresale4kids.com/uploads/1/3/0/7/130775734/vewaxeno.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0133/files/94700093775.pdf
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/gapavibuverogikusu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/rorapijitokawomupemis.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/slow_dance_adventure_time.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/anatomy_of_brachial_plexus.pdf
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/raritexarosojajitu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/rijejedavugavepazo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/54719420696.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/58363874903.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/28069542278.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_off00005953.bin
42f36a4451f8d56eef3184b2461cf593daf68cbaf44e8a9b33b649ee8614adfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5953 5472 bytes
font_01_sfnt_off00006c06.bin
94cfd3413b76a9d085d1e975ef519744682d7da7b42968a1d9c5e70f87e532b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 10304 bytes
font_02_sfnt_off00008efc.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 4324 bytes

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