Malicious PDF — malware analysis report

Static analysis result for SHA-256 21fd82c389118d65…

MALICIOUS

PDF

44.9 KB Created: 2020-03-31 21:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fa96a1b70dc6a787e30806fe849ed213 SHA-1: 7be4e91110b8d08bd119fb753e24f55a4a70e5a0 SHA-256: 21fd82c389118d6581a96f432703d7ecaa1f104214680e6e1f25f3ad3a652ba7
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Dropper.Agent-9135901-0 and a high ML score. The document contains a large number of embedded external links, characteristic of a link farm or redirection scheme. The primary lure appears to be related to 'Pioneer vsx-1021-k remote', suggesting a potential phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.Dropper.Agent-9135901-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9135901-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://finixmarketing.com/uploads/1/3/0/2/130287504/130287504.html#pioneer+vsx-1021-k+remote
    • http://saintjosephsuites.com/uploads/1/3/0/7/130775876/9497712.pdf
    • http://dinosandtutus.com/uploads/1/3/0/5/130551726/5870621.pdf
    • http://rubyit.co/uploads/1/3/1/1/131163943/risawogesetupuzifi.pdf
    • http://chauxconsulting.com/uploads/1/3/1/4/131411147/277e0dade63c50.pdf
    • http://ninebotours.com/uploads/1/3/1/3/131398292/vepepifimirowox.pdf
    • http://falulapeacock.com/uploads/1/3/0/7/130739653/9775478.pdf
    • http://tsdafinals.com/uploads/1/3/0/5/130540118/5437194.pdf
    • http://itpnc.com/uploads/1/3/1/0/131070692/nibakusev.pdf
    • http://thestampingzoo.com/uploads/1/3/0/6/130603985/dufalipug-mewiwukovonasa-tovuvuxitu.pdf
    • http://torontolifeguarding.com/uploads/1/3/1/4/131407088/femeriji_nemevojigabad.pdf
    • http://ourliteracylounge.com/uploads/1/3/0/5/130588744/6414462.pdf
    • http://newarea.org/uploads/1/3/0/3/130313152/leverikul.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008777.bin
7674b8328aefe4865e05a303a8bf3661cdb014983e248db5eae8226c89b5ca0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8777 8068 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.