Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7b9024dea27507…

MALICIOUS

PDF

40.1 KB Authoring application: Adobe PDF Library 9.0
MD5: 0a096e2f784e5d170cabd7dc521d8221 SHA-1: bd467e93143fbfd50602d7ed236200c24e8d7b50 SHA-256: 3e7b9024dea2750704217e84c1552590e44d3e90460a01fa430ae1fe4eb34b36
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, forming a link farm, which is a common tactic for phishing and malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, while containing text about joinery, also embeds numerous links to external PDF files, suggesting a lure to download further malicious content.

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://gos.tatarstan.travel/uploads/2020/01/28/sutesimade_regulegogosawij_zetovokukumexox_bodux.pdf
    • http://tavabap.yootrade.ru/uploads/2020/01/28/maparej.pdf
    • http://bradwarnermedia.com/uploads/1/3/0/5/130540493/eacb7e.pdf
    • http://ultracooltrends.com/uploads/1/3/0/3/130323632/dulusevujope_tegijakezojuz_jafopikute_zuman.pdf
    • http://nickysawesomewebsite.com/uploads/1/3/0/4/130476340/1f7fc69d0abc.pdf
    • http://moscowshamrocks.com/uploads/1/3/0/4/130476091/tugominuxolujorukoja.pdf
    • http://uclaprisoned.org/uploads/1/3/0/6/130620818/nakixojav.pdf
    • http://biking4life.org/uploads/1/3/0/5/130542770/furaxusedulutifiku.pdf
    • http://nicosnerdnews.de/uploads/1/3/0/4/130483741/28233078061c1.pdf
    • http://xoveto.gg-jewelry.ru/uploads/2020/01/27/tuvuronilobaje-nujuse.pdf
    • http://cavinfitness.com/uploads/1/3/0/3/130323281/ab000d77d.pdf
    • http://connectivityusa.net/uploads/1/3/0/6/130639463/dituxijexuxijuvapilo.pdf
    • http://mojiles.net/uploads/1/3/0/2/130287504/povurokubibepi.pdf
    • http://playhardathletics.com/uploads/1/3/0/5/130588839/532e8ea286557.pdf
    • http://birdhousepdx.com/uploads/1/3/0/4/130483993/8451160.pdf
    • http://jioulian.com/uploads/1/3/0/5/130543671/xevaxeto.pdf
    • http://mysamcooke.com/uploads/1/3/0/5/130551427/bulanowigakibex.pdf
    • http://vawase.graf-von-eichendorff.online/uploads/2020/01/29/1091969.pdf
    • http://wal.extrade.website/uploads/2020/01/29/4a464.pdf
    • http://sustainablesuburbancommunities.com/uploads/1/3/0/5/130588796/3120395.pdf
    • http://northwestuu.com/uploads/1/3/0/4/130488442/130488442.html#the+art+of+joinery

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000162f.bin
1d68db33e6c6054ffbe70c1cf1725afdc5e045f3a331e182c7b040db85c87e37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x162F 8392 bytes

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