Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68af1a1707378e2…

MALICIOUS

PDF

53.3 KB Created: 2020-08-15 06:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 065a28881d8cdd6ea4c8373e3f5d8f74 SHA-1: c6660fd1f77ba4efda337717885608137fd397b0 SHA-256: c68af1a1707378e20c8d55c8ed2354ece300d65162b07d301610abeb65ca19f0
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text as the redirector URL, suggesting a social engineering attempt to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=tasks+and+duties+of+a+tour+guide
    • http://files.gasthauszumpiano.com/uploads/1/3/0/7/130739986/moravenexel.pdf
    • http://simalusan.annamhenderson.com/uploads/1/3/0/8/130814328/kitekiropikemi-fokolaxafom-diriretativeg.pdf
    • http://suxasagi.ranejiang.com/uploads/1/3/0/7/130738993/28f47eb1a.pdf
    • http://files.theoec.ca/uploads/1/3/2/6/132682342/vimut-pewefimejoxetit-vuxuwu.pdf
    • http://kitowuta.cbswimclub.org/uploads/1/3/1/1/131163599/4896144.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/13922994591.pdf
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/o_reilly_fluent_python.pdf
    • https://cdn.shopify.com/s/files/1/0436/0732/6882/files/lufazofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1077/files/kewuzekeratupibusiriv.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/wegosirokogetixu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/99327287858.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/zevezepo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/27430378281.pdf
    • https://cdn.shopify.com/s/files/1/0430/7956/5465/files/cen_01_2020_ntpc_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/83363635265.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1436/files/94801892590.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_off0000853e.bin
cfa1c895086f45d43a25453d361a5fa72781ce3e8fd5d95ef0f786781b2b3b0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x853E 4940 bytes
font_01_sfnt_off00009610.bin
2d1518cc6c99c7464c4e258d5282375829d005cfa80de9a905740b6438171d5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9610 10468 bytes
font_02_sfnt_off0000b9e5.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E5 4324 bytes