Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9875a3fb43221f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-05 05:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54cacd56a58c1f0692d6bdd1abbbb1cf SHA-1: 28b1510c94852ae482d7c0c8010b6ab26e54ed42 SHA-256: 1b9875a3fb43221fff1bdadf9a868124a36ce6e3ed637da2ed7c4153002a47db
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=biperideno+bula+pdf', is identified as a malicious redirector. This suggests the document's purpose is to direct users to malicious infrastructure through a series of redirects, likely for phishing or malware distribution.

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=biperideno+bula+pdf
    • http://files.thedigestivehealthclinic.com/uploads/1/3/0/9/130969254/nujuwiduxibiwozeveni.pdf
    • http://files.gumbauctionandrealty.com/uploads/1/3/2/7/132740435/gisukituk_wiwidulixejisav_siwimejuvep.pdf
    • http://files.ascacupuncture.co.uk/uploads/1/3/1/3/131378952/bolezoma-loruvomevetilez.pdf
    • http://files.irieiwaforstudentsinc.org/uploads/1/3/0/7/130739383/4303262.pdf
    • http://files.negsbestthing.com/uploads/1/3/2/8/132815961/riwemuto.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/52775724950.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/fukamibin.pdf
    • https://cdn.shopify.com/s/files/1/0433/4547/7783/files/49206263501.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/84240254289.pdf
    • https://cdn.shopify.com/s/files/1/0431/8455/4141/files/contabilidad_basica_asientos_contables.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/69969765018.pdf
    • https://cdn.shopify.com/s/files/1/0440/7430/3638/files/apkhere_minecraft_0._14._0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/seduzowa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2593/files/2005_toyota_corolla_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/zifakoludipu.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_off00006aa2.bin
1f7035660db01673b6375bd42c3b7dd51cd72c961779f9da2405e3808aa25db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA2 5044 bytes
font_01_sfnt_off00007bd6.bin
88d770e6632fef4bb31a9fd45d12b8ccb674a2e651af36205d4222c201eca0fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD6 10088 bytes

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