Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb103ac48b25f729…

MALICIOUS

PDF

32.3 KB Created: 2020-08-09 15:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 881dcefe4e260afb5625c3e36ae6214d SHA-1: 6057251711905ec159f179632662f93fbd313c1e SHA-256: eb103ac48b25f7299ecd1e9a275d62e09eb4286f35c37c09c86a4978b5d67107
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hinario+vo+corrente+pdf, which likely serves as a gateway to further malicious activity. No scripts were extracted from this sample.

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=hinario+vo+corrente+pdf
    • http://files.mixedadventures.co/uploads/1/3/1/4/131437335/9294005.pdf
    • http://files.foliagewoodcarving.com/uploads/1/3/1/4/131454670/birekexujijugaz.pdf
    • http://files.lexcoffeecottage.com/uploads/1/3/1/1/131163684/9087941.pdf
    • http://files.johannakeehn.com/uploads/1/3/0/9/130969298/941302.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/nizololokomuvotomunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/gosotanivep.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/95025610502.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/739692357.pdf
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/sujet_brevet_franais_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/30719032844.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9064/files/ragojavoludosava.pdf
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/sajibilanexizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/jizewifevewe.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_off000042e3.bin
78a931466b28d253b2988af329a7e70fd4530631128aa51a14cda90fd367d373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42E3 4960 bytes
font_01_sfnt_off000053e0.bin
f04a4084af3de72b622ea6616eea2376ad0989df3c85c9d498079101a3b90425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53E0 9652 bytes

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