Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbea7d34eae6780…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 08:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1e4bf0d755600de9d22ae6da2f20b3b SHA-1: d6a155fe85f66160f41f77f8685509b319ee59e9 SHA-256: adbea7d34eae6780c9c2366e789781f074f23d6d6c67688069b8f43122b425cc
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious URL, 'https://ttraff.ru/pify?keyword=fusionner+pdf+avec+acrobat', is identified as a malicious redirector. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. The document body itself contains garbled text but also includes the malicious URL and references to PDF merging tools, likely as a lure.

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.ru/pify?keyword=fusionner+pdf+avec+acrobat
    • http://files.padfieldvillage.co.uk/uploads/1/3/1/4/131453934/7062757.pdf
    • http://files.barge-aviation.com/uploads/1/3/0/9/130969984/gufuzatibokafedok.pdf
    • http://files.calliecolifecoaching.com/uploads/1/3/2/7/132740375/nawafej.pdf
    • http://files.terrehautemusic.com/uploads/1/3/2/8/132815054/rakotubatere.pdf
    • http://zebupip.thegreeneyedgirlspdx.com/uploads/1/3/1/1/131164250/676091.pdf
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/98176346051.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/lekakuzosidulodix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2635/files/21413055148.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/66082701881.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/judemarunapegexixekoresop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/50170797280.pdf
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/valemewofibefojaneromales.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/bafaduvizobepavitof.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/tenolukonowivejapekoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/zoxesokibinakegawuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/47556102107.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/pojux.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_off000063a2.bin
cbe600aa8a997c5f717ab7eee605e7d0f7dee51e1710b5cc3edad496515419fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 5272 bytes
font_01_sfnt_off0000759c.bin
c6b69f595f3e3fe3446f2954dda1a724f913bab57951bda01511ffb2ef19e5be
pdf-font-stream PDF embedded font (sfnt) at offset 0x759C 11572 bytes