Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f8502cd2f96fa4…

MALICIOUS

PDF

51.4 KB Created: 2020-08-16 21:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b3dbaddefb164cf239d377bb634334 SHA-1: 62aa49e013b26bd3c105bcee1e044eaf975ddeaf SHA-256: e3f8502cd2f96fa4262d385bfb46c1be57683424c402df6fabff9a15b1f72fc3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.com/pify?keyword=ateneo+de+cebu+uniform', is flagged as a malicious redirector. This suggests the document's primary purpose is to lure users into clicking malicious links, likely leading to phishing pages or malware downloads.

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.com/pify?keyword=ateneo+de+cebu+uniform
    • http://files.godsredeemingloveintl.org/uploads/1/3/0/7/130776037/wokej.pdf
    • http://files.dartendistrict.com/uploads/1/3/1/8/131856381/jarukid.pdf
    • http://files.agentleanswer.com/uploads/1/3/1/6/131606094/nuwero.pdf
    • http://files.bohobuttercream.com/uploads/1/3/1/3/131379223/454187.pdf
    • http://files.kphtheatreproductions.com/uploads/1/3/1/4/131411197/8810745.pdf
    • https://cdn.shopify.com/s/files/1/0451/1576/8985/files/31420323834.pdf
    • https://cdn.shopify.com/s/files/1/0437/7224/8215/files/16211177501.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/94514751838.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/81318273168.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/20785054809.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/focus_gradebook_collier.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5222/files/foxumomolaxaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/50751131973.pdf
    • https://cdn.shopify.com/s/files/1/0436/0064/2211/files/3c_toolbox_pro.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/challenges_of_malaria_diagnosis.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_off00008dfb.bin
c9ffe31a3f71be062e1459b6379a8cfd6cd05bdba122e9e9125cd348cd0a08db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 4876 bytes
font_01_sfnt_off00009e7c.bin
76e7115abcfe3e519393ca9a46e4c4b65b0ae0edfdb2b96d445f84e5957050a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7C 10076 bytes

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