Malicious PDF — malware analysis report

Static analysis result for SHA-256 317a40099855b6f3…

MALICIOUS

PDF

65.4 KB Created: 2020-07-28 08:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 842007c544ab67e26b655e060d524f58 SHA-1: 825fedf7502cf5d4abc4ee6e2fc71f721fb16f4c SHA-256: 317a40099855b6f3e37c622148b2ed54f7386a45fb9b90552a1d1ac4ef89426b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to an 'Ivey hba employment report 2017', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the ultimate destination.

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.cc/pify?keyword=ivey+hba+employment+report+2017
    • http://files.stmarks-benson.com/uploads/1/3/1/6/131636866/7e15335.pdf
    • http://files.swindonheritageblueplaques.com/uploads/1/3/0/8/130874587/1461531.pdf
    • http://files.starwarsjournal.com/uploads/1/3/0/7/130738704/1067158.pdf
    • http://files.aptutorgroup.com/uploads/1/3/1/4/131410545/b2d2eacb7.pdf
    • http://files.416neon.ca/uploads/1/3/0/8/130813409/c03376e42370.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/wedusazubomelituk.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/93428613134.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17524121831.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/mutaruvuribalozotunikolek.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/budawamezo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/16872120065.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/gigusudiju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/68030077102.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/59978127317.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/xiwusubifiresupamil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8874/8452/files/87721376215.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_off0000c1be.bin
df0090ec13fda4bac6da58fa2609120b511e0ad992994cfc83c4ca382ff015c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1BE 5268 bytes
font_01_sfnt_off0000d388.bin
4ef11b705b5605dfafaec0d9be953a2fbdd06f365c22949827b392f89e89b02b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 10736 bytes

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