Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b6cc8030f3061f…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 00:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b94546a5f946b3b68a539aec993f77dd SHA-1: 8ce534417f5442a72d25039bc8050c2ff8e4de40 SHA-256: 49b6cc8030f3061fe8688f795f8c1766af8be276dbbb73b0ccfa1aff3e15b43c
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with SEO link farms. One prominent link directs to a known malicious redirector, 'ttraff.com', with a keyword suggesting a lure related to medical analysis. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links indicates a potential attempt to distribute further malicious content or engage in SEO abuse for traffic redirection.

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.com/pify?keyword=arterial+blood+pressure+waveform+analysis
    • http://files.radarresearch.com/uploads/1/3/1/6/131606859/vobuju.pdf
    • http://files.summerlaneborzoi.com/uploads/1/3/0/7/130776218/nulufurotopor.pdf
    • http://files.aerialmediavisions.com/uploads/1/3/1/0/131070476/xelalopixorugawi.pdf
    • http://tugowow.restaurantcleaning.org/uploads/1/3/1/3/131384226/a1337.pdf
    • http://files.bensawyermusic.co.uk/uploads/1/3/2/7/132740218/kelupotamevivok.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/carbothane_134_hg.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/2806616916.pdf
    • https://cdn.shopify.com/s/files/1/0438/3624/4118/files/black_desert_mobile_sea.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9741/files/cablevision_altice_information_channel.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/wewevajijuxani.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/cambridge_pet_writing_part_1_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/71799463472.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/zovigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wofizafadunemewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/install_sierra_on_virtualbox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugos.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_off000080f3.bin
3c5599cc8508f41aa77e21c650800c52705ce713b6085ce0681f9a120b2bb8f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x80F3 5572 bytes
font_01_sfnt_off000093d6.bin
db438eaf4e89238e9746a9e58c3db3b24b5ba377f0ddfcfcd17d6155766e0f32
pdf-font-stream PDF embedded font (sfnt) at offset 0x93D6 9860 bytes