Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b41e53dc2c4b801…

MALICIOUS

PDF

33.1 KB Created: 2020-08-13 10:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bae1147d9d2dc2c7032c1885c5b51283 SHA-1: d4c80e0f47432e681cd754fa1316039d83c6351f SHA-256: 4b41e53dc2c4b801b418545aee54eb52b2d19f9864cff4054924b3ca69c88153
150 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for containing links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The primary malicious URL identified is https://ttraff.cc/pify?keyword=argenta+pivotica+pdf, which is likely used to redirect users to further malicious content. The document body contains garbled text and embedded URLs, reinforcing the malicious intent.

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.cc/pify?keyword=argenta+pivotica+pdf
    • http://juzenavo.mworchestra.com/uploads/1/3/0/7/130776795/weretimixo.pdf
    • http://redokobow.bikingtheforks.com/uploads/1/3/1/1/131164439/diwagulim.pdf
    • http://files.haileegibbons.com/uploads/1/3/2/6/132682655/1bc02e0f290.pdf
    • https://cdn.shopify.com/s/files/1/0448/4952/8989/files/liver_disease_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/zinupixeroxukixive.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/savutojuwonepuvofix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/wizubeta.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/fevubak.pdf
    • https://cdn.shopify.com/s/files/1/0437/3846/4417/files/zibowifitewowewadib.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/2001_pt_cruiser_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rokagarunawawutasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/tulivojebewi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/lawozezinikisob.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_off000045e7.bin
be3738763515ff3682b4d45445bdd02ef8d15c424ea79766166bad85d449abec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45E7 5164 bytes
font_01_sfnt_off00005784.bin
f210c886de9bdac94f015358ae55659dbb41c3ec520fc276bae9fe46d314875d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5784 9384 bytes

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