Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1769e137115993a…

MALICIOUS

PDF

42.3 KB Created: 2020-07-23 12:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6636a21f3d01615b9d5c3c32da1f46f2 SHA-1: c4917129ff49e1375b94233d86b875f2a2707352 SHA-256: f1769e137115993a6f646106a2854d66fa76f2cf3fe82af40ab4123d5b445780
120 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and a link farm. The embedded URLs, particularly the one pointing to 'ttraff.com', are flagged as malicious. The document body, though heavily obfuscated, appears to be a lure related to a 'conference room meeting schedule template'. The primary attack vector involves redirecting the user to a series of malicious or link-farmed websites.

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=conference+room+meeting+schedule+template
    • http://files.udderlygorgeous.com/uploads/1/3/1/4/131437385/dee52d61.pdf
    • http://files.danvalleyassociation.com/uploads/1/3/2/7/132741476/napufo-repisudarewu.pdf
    • http://files.liv4ever.com/uploads/1/3/1/1/131164002/5119891.pdf
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/18672680519.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1056/files/20207829380.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/97183777341.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/letowopebofowebizuwir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/muvezitovugasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/dovekeruvasakuzub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/juxumadebamapetutorobegew.pdf
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/sapevuzibelulej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/70009475292.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4171/files/nebolilakulepatufesukuzo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/towotapor.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_off00006816.bin
5e70877434d3fe78800da6e2d6a58a790c25a04a57b0b25a8f084f6d2885eacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6816 5476 bytes
font_01_sfnt_off00007a85.bin
7b9a1a1453c760c2054cbbfcdce9f56e9f312a90e0338c148a66e266ebdf90ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A85 9744 bytes

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