Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e221122c3e9246c…

MALICIOUS

PDF

34.6 KB Created: 2020-08-19 05:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c19d9fb89ad6f149d4fa0e9db336ae7 SHA-1: 9ad8d28fce75e8a5dfe1493428ded0ad0e11cfcc SHA-256: 9e221122c3e9246cc666d4c0e30155aa64e852d79931b55285d95f7c6ae7188b
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to Shopify domains hosting other PDFs, but one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the text 'Fusionner les pdf en ligne', suggesting a lure for an online PDF merging service. This service, however, redirects to 'ttraff.cc', a known malicious redirector, indicating a phishing or malware distribution attempt. The presence of multiple PDF links, including those hosted on Shopify, suggests an attempt to blend malicious links with seemingly benign content to evade detection.

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=fusionner+les+pdf+en+ligne
    • http://bawixasum.beyondacademia4all.org/uploads/1/3/1/4/131454207/2161104.pdf
    • http://files.oubta.org/uploads/1/3/0/8/130874205/pivanaxofiteg_lugolezedi_vopefejanuguser.pdf
    • http://files.craftsbywayne.com/uploads/1/3/0/7/130775850/vowebekilavakav_romazimexuwo_valosivibupe_gebufedevokedi.pdf
    • http://files.caringhomehealth.net/uploads/1/3/0/8/130873880/5373ba.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/xajotujikuxuwulif.pdf
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/28902916795.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kenawuvotijogajutimev.pdf
    • https://cdn.shopify.com/s/files/1/0434/7074/9849/files/88189731484.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/4584318362.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/5967739125.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8673/files/horarios_cercanias_renfe_asturias.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/42309922452.pdf
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/fajotubafozudab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/kroll_software_user_guide.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_off00004893.bin
768f5b569095ae543ed3edbb34a9af740c8c20f360b81c99fb3a464fdf0973b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4893 4952 bytes
font_01_sfnt_off0000597a.bin
f049db44e89db01582bb3c74f6bf6a7136642b6ed38429cc39fb836a552945a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597A 10876 bytes

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