Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bf25153ca106f14…

MALICIOUS

PDF

66.2 KB Created: 2020-08-02 10:03:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43107eb5035ef47acedffae6145dfe89 SHA-1: 759b9b8ef7c133cbb40a0516f2ac0d7d85ef61c9 SHA-256: 7bf25153ca106f140b4e40d807368dd68dc11819b9f528792c522d1dadbe2647
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=little+girl+anime'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding a large number of external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0434/3631/0678/files/ragodufezodozoxuvefaxatas.pdf'. The document body, though heavily obfuscated, contains the redirector URL, suggesting the document's primary purpose is to drive traffic to malicious infrastructure.

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=little+girl+anime
    • http://files.bringalessiahome.com/uploads/1/3/1/6/131606169/vokujan.pdf
    • http://files.medicareyourway.com/uploads/1/3/0/8/130874240/xemulerasitemebu.pdf
    • http://files.genesis-park.com/uploads/1/3/2/6/132681293/jovelepokidubif.pdf
    • http://files.number120designs.com/uploads/1/3/1/3/131383651/rotimewel-gorijiduladuw-zagumir-bukagijijefire.pdf
    • http://files.portasuptsblog.org/uploads/1/3/0/9/130968950/vexuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/ragodufezodozoxuvefaxatas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/28561109835.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/50938204758.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/18798130429.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/37460103558.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/fodibusi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/26888707232.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/ladotadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/bunimifovusexalabeku.pdf
    • https://cdn.shopify.com/s/files/1/0439/6482/5758/files/tonasirimofaxoketi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/xipoturu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/16217319641.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/67005091924.pdf
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/15868254037.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2163/files/gears_of_war_ultimate_edition_unlockables.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007aaf.bin
a3bd687c4c4584aa3087ec4b924bc4f481697949d5dbe063c8e2eaf6af1f4e67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAF 19672 bytes
font_01_sfnt_off0000b98a.bin
e6b5b8b42f36a7967f1dc5e04905bab0127bae4b059513309d26e620f54365e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB98A 4448 bytes
font_02_sfnt_off0000c877.bin
d621a43fff1c0570ae756266bf715be2ac5ed1c18c4a0b2c99c269574e41b65c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC877 10372 bytes
font_03_sfnt_off0000eb8d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8D 4324 bytes

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