Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3a1140c832aef2…

MALICIOUS

PDF

46.8 KB Authoring application: Inkscape
MD5: 0a404f3b655184841981fc2bf7ba4fe7 SHA-1: d9c833b27a7b3f9b9546e6bc9d09b28fdb6ea720 SHA-256: 7f3a1140c832aef200a966a49c7bc9cdefb89cee0707fe8351854b37412fb1ed
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The primary finding is a large number of embedded URLs pointing to other PDF files, suggesting a link farm or a distribution mechanism for further payloads. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded URLs strongly suggest an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://sekworks.com/uploads/1/3/0/4/130477278/josepixapatoze.pdf
    • http://apexsportswellness.com/uploads/1/3/0/5/130539016/mefaxaliro-luped.pdf
    • http://farmersmarketpettreats.com/uploads/1/3/0/5/130539084/mafinep_janewewawezibu_zitorob.pdf
    • http://bantamlongtail.com/uploads/1/3/0/4/130488512/ea0f5cd44f.pdf
    • http://nordykeart.com/uploads/1/3/0/3/130324136/dozezebitumari.pdf
    • http://npaevents.com/uploads/1/3/0/5/130588650/pepowopotusip.pdf
    • http://terryhonoreconstructionco.com/uploads/1/3/0/8/130873995/zirikux.pdf
    • http://buffalopayroll.com/uploads/1/3/0/7/130776577/5183426.pdf
    • http://bswizard.com/uploads/1/3/0/5/130551463/rapozalotonijus.pdf
    • http://tle911.com/uploads/1/3/0/5/130551091/9146707.pdf
    • http://sparxx.org.uk/uploads/1/3/0/2/130271078/6d0467ccf.pdf
    • http://namoidesigns.com/uploads/1/3/0/7/130739776/situdaligexa-paxerililoni-lijugobitofi-lukememow.pdf
    • http://bestarizonahomesforsale.com/uploads/1/3/0/6/130621035/kureselomijov.pdf
    • http://www.nhsreunion2009.com/uploads/1/3/0/2/130288549/kaneveliwiga.pdf
    • http://sta-66-99-58-208.ladse.org/uploads/1/3/0/6/130621179/130621179.html#gta+5+cheats+ps4+cars+online
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003cf0.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CF0 16036 bytes
font_01_sfnt_off0000512b.bin
2410eb1db31a1b39e5a9feb071cd9747e62dd8341c12eeeabf4b263adb2830b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x512B 2992 bytes
font_02_sfnt_off00005dd7.bin
84a79310d15fdd5a2681af2686746b811609e8842d5fb4e4a1ab0dbf764f8534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD7 7668 bytes

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