Malicious PDF — malware analysis report

Static analysis result for SHA-256 83782dde2d832572…

MALICIOUS

PDF

42.5 KB Authoring application: GIMP First seen: 2020-09-07
MD5: 60cf04bf96a30937a1717b7a6cedcabb SHA-1: e23c14e39d46954e6ecf3c0e313cdf91a7b7c206 SHA-256: 83782dde2d83257284f6950eaa5ff1c7a1d2a96556d158c509ccc7a6e1001d11
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.TtraffRobotInstall. The PDF contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm or a method to distribute further malicious content. The document body is heavily corrupted and unreadable, providing no direct clues to its intent beyond the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://louromartinsadvogados.pt/uploads/1/3/0/4/130476244/logaf.pdf In PDF document text
    • http://my.miquos.network/uploads/1/3/0/5/130551615/delixamiralafej.pdfIn PDF document text
    • http://sunitagargcpa.com/uploads/1/3/0/7/130738708/pidoposul_zalakalopaju_zewidot.pdfIn PDF document text
    • http://troop14holliston.com/uploads/1/3/0/2/130272470/b97e80.pdfIn PDF document text
    • http://millennialtraveleats.com/uploads/1/3/0/6/130639845/80572.pdfIn PDF document text
    • http://teepinesses.com/uploads/1/3/0/6/130605001/1387172.pdfIn PDF document text
    • http://sotatodev.3ndfl-nalogi.ru/uploads/2020/01/28/06121042d5a0c.pdfIn PDF document text
    • http://rimavop.store/uploads/1/3/0/6/130640021/motodidiwugozaz.pdfIn PDF document text
    • http://whatthehula.org/uploads/1/3/0/6/130604322/6f405828cd2.pdfIn PDF document text
    • http://blackhillsbiking.com/uploads/1/3/0/7/130775398/de9cd4596db9.pdfIn PDF document text
    • http://frenchquarterbistro.com/uploads/1/3/0/4/130491852/kokeb.pdfIn PDF document text
    • http://blackhillsbicycling.com/uploads/1/3/0/2/130289595/pipikijewerane.pdfIn PDF document text
    • http://alex-kwon.com/uploads/1/3/0/4/130483748/16a9296362d7d.pdfIn PDF document text
    • http://sonicsustenance.com/uploads/1/3/0/2/130274017/37e6730aca.pdfIn PDF document text
    • http://nickandsam.net/uploads/1/3/0/3/130323454/bipanepa.pdfIn PDF document text
    • http://theheroinesclub.com/uploads/1/3/0/7/130739577/jigegasugotifoxi.pdfIn PDF document text
    • http://cothrons.net/uploads/1/3/0/8/130814390/jibuzerasonibikidok.pdfIn PDF document text
    • http://buddy-burner.com/uploads/1/3/0/2/130287881/1e73bb0fbcf5.pdfIn PDF document text
    • http://estebangutierrezf1.com/uploads/1/3/0/7/130739947/764299803701.pdfIn PDF document text
    • http://dangerouslycollaborative.com/uploads/1/3/0/7/130775640/muputuxojumerisok.pdfIn PDF document text
    • http://ninaceledonio.com/uploads/1/3/0/8/130815031/bevapilasexowo.pdfIn PDF document text
    • http://royalematch.com/uploads/1/3/0/7/130739578/wefatopisumawazuduri.pdfIn PDF document text
    • http://vapehutbungay.com/uploads/1/3/0/4/130489102/2dd6cae3d.pdfIn PDF document text
    • http://succacti.com/uploads/1/3/0/5/130538862/5048485.pdfIn PDF document text
    • http://ajgittnerprocessequipment.com/uploads/1/3/0/7/130776225/togugawisute.pdfIn PDF document text
    • http://mindforyou.org/uploads/1/3/0/6/130621846/130621846.html#merry+christmas+song+piano+notesIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0F 16120 bytes
SHA-256: 0d355b956a9dff8708fe1b1ecbbec6815800202606c49a7e1bd1898687aadaa0
font_01_sfnt_off00004541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4541 6816 bytes
SHA-256: 573133b199f056624248d5ae6f2db5e2e63819a6a003b407d4f2782e831d2b14

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