Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3022e589171bff3…

MALICIOUS

PDF

46.6 KB Created: 2020-07-26 13:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 921837a343a2a56db5137afa0230587f SHA-1: 75bb873575ac69fda2ff32be1fb0d57c2b208299 SHA-256: d3022e589171bff38e10b97fa7ecc9f7b51c1f69daecaa0973f4c6d69f725f4f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.cc. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body is heavily obfuscated and appears to contain metadata related to its generation, but the primary malicious indicator is the redirector URL.

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=adjective+verb+form
    • http://files.eastmanbookshop.com/uploads/1/3/0/7/130740251/zatolejoxig.pdf
    • http://files.hsfhomeconnections-hilton.com/uploads/1/3/2/6/132681690/zubalubikiwu_gaxetewuda_furidomepun.pdf
    • http://files.thomasganzevoort.com/uploads/1/3/1/8/131856277/zetijeku-bapamukasefimij.pdf
    • http://files.thestrawberryvine.net/uploads/1/3/1/4/131438038/7721503.pdf
    • http://files.myvoiceback.com/uploads/1/3/1/0/131071243/pafigojali.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/mijimivin.pdf
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/fimilu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/xanifeduleruxit.pdf
    • https://cdn.shopify.com/s/files/1/0438/1379/8050/files/12328130718.pdf
    • https://cdn.shopify.com/s/files/1/0431/8717/5588/files/wibabukamafaxogafinulogef.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/nowipiw.pdf
    • https://cdn.shopify.com/s/files/1/0438/9021/3019/files/vabuwonevememokizop.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/83020904630.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/fadege.pdf
    • https://cdn.shopify.com/s/files/1/0432/8469/3160/files/72454362361.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/45456874783.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2634/files/7922057776.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_off0000723a.bin
f3c0ff4ebf3f19dc8a3158dc7f00681d7c6e6d9390a35eb1d7ba56432d6a65f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x723A 4692 bytes
font_01_sfnt_off00008236.bin
6a132f9e8e9a2ce955a3980c1ec3865b5fe6db03bdaeafab7fbe182c976cb8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8236 13704 bytes

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