Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd7055b0c2c04dc…

MALICIOUS

PDF

43.3 KB Created: 2020-08-16 22:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977d9896eefa5e156db53ca6626ad785 SHA-1: 314ba7e6bdf5d0bb690df341c73fdc29a7eb0abe SHA-256: 3cd7055b0c2c04dc05155a244358093fbb50610ae4b56438da13f190c97d3d2a
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, specifically pointing to 'https://ttraff.com/pify?keyword=dexketoprofen+adalah+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and lure victims. The ML classifier also strongly flagged this PDF as malicious.

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=dexketoprofen+adalah+pdf
    • http://files.daytonatopagents.com/uploads/1/3/0/7/130739061/wewapatomewek.pdf
    • http://wulasa.mrwisner.com/uploads/1/3/1/3/131378950/4ceadb6808.pdf
    • http://files.inspiredbev.com/uploads/1/3/1/3/131398224/dewanesob-divaf-gedari.pdf
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/adjetivos_en_frances.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4583/files/manual_de_biomagnetismo_holistico.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/69647729007.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2560/files/33075441279.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/20983041218.pdf
    • https://cdn.shopify.com/s/files/1/0428/4658/4999/files/gubumifogilopo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2730/7416/files/dawodos.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/xifegezifenokoko.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1493/files/rawesadav.pdf
    • https://cdn.shopify.com/s/files/1/0428/7938/5756/files/bizogabopeluninusad.pdf
    • https://cdn.shopify.com/s/files/1/0428/2925/0719/files/21219407768.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_off00006d23.bin
0a0aa50ade7b187e655fc26d1c325f944cdc6148f75e1987263bb5568f279b9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 5080 bytes
font_01_sfnt_off00007e6b.bin
ad09c82cfce37b7d5c27d9a5c122e1ed244782a5d98dc1361ed569278539ccb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6B 10096 bytes

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