Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca02f9f39dc89dd…

MALICIOUS

PDF

56.9 KB Created: 2020-08-27 13:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe83a67558b427af3d25fcbb529fe621 SHA-1: 4d91d1a0dcd236383ddca96001f30764ccd1919c SHA-256: aca02f9f39dc89dd723d8a4cb5e8ec7b0bc64164b34f59b403ac2df34baf95d0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=masse+volumique+terre+v%25C3%25A9g%25C3%25A9tale'. This indicates an attempt to redirect the user to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, suggesting a tactic to increase visibility or distribute malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector.

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=masse+volumique+terre+v%25C3%25A9g%25C3%25A9tale
    • http://mujuso.tennisschule-khablo.com/uploads/1/3/2/8/132814930/wiwiwoji_wiretojal_vafova.pdf
    • http://xivovum.triplecrownlacrosse.com/uploads/1/3/1/4/131453558/detax.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/34081644204.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9283/files/manolovusidowenesulu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/amd_radeon_auto_detect_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/15913242100.pdf
    • https://cdn.shopify.com/s/files/1/0436/0385/3476/files/mass_effect_wiki_fornax.pdf
    • https://cdn.shopify.com/s/files/1/0435/1367/5928/files/45101920723.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/malaysian_anti_corruption_commission_act.pdf
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/vaxevuwupewoxujugofevixof.pdf
    • https://cdn.shopify.com/s/files/1/0436/6031/2741/files/rorajamiduxuwovasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3535/files/zonowurimobuvedeweki.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/
    • https://cdn.shopify.com/s/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009213.bin
f380548d1bb6ffc3f717294bc9dd730cd24a9c553774d345056d1e803ab08990		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 5336 bytes
font_01_sfnt_off0000a3e8.bin
d3c2a23ba5f92d7e06ade479f63912e3818a217773595369bee3e3fbdaf8b309		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E8 16872 bytes

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