Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b13f1d642fc2e6a…

MALICIOUS

PDF

57.8 KB Authoring application: QPDF
MD5: c8c759dce4160c4ee335b830566597c6 SHA-1: 0231d6b6e9ebeeb4dd980de9690ac09f3cb00c66 SHA-256: 3b13f1d642fc2e6a2b8ca79a5314fd3714f37ebd3ac2709d53d6a3a038620320
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a large external link farm and a ClamAV detection for phishing. The embedded URLs suggest a phishing or traffic-driving campaign. The document body contains garbled text, indicating it is not intended for human consumption but rather as a container for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seefeldtlab.com/uploads/1/3/0/3/130324005/28a03e00d97302.pdf
    • http://scholarshipsandgrants.school/uploads/1/3/0/4/130488304/9662656.pdf
    • http://drivegilroy.com/uploads/1/3/0/7/130739415/dejabawa_medonevopilo_rodewufowubexof.pdf
    • http://koasports.com.au/uploads/1/3/0/6/130621178/mizifibizonakut_pumibajilin_zoxodijefezux.pdf
    • http://www.believe2achieve-pt.com/uploads/1/3/0/2/130272071/tepodevaxubu_kabojadifo_vomesi.pdf
    • http://delgadahoy.com/uploads/1/3/0/8/130874252/1310278.pdf
    • http://lovebearokc.com/uploads/1/3/0/4/130435843/navelotidekanusew.pdf
    • http://bluechipcleaninglv.com/uploads/1/3/0/6/130604230/f892ff04faf.pdf
    • http://newyorkgunsafes.com/uploads/1/3/0/8/130814754/3361066.pdf
    • http://coldwatermusicschool.com/uploads/1/3/0/2/130289809/vovovuregobegelu.pdf
    • http://nswminiaturepony.com.au/uploads/1/3/0/5/130590567/4835c91724d6.pdf
    • http://ssjo.org/uploads/1/3/0/7/130774962/138397.pdf
    • http://nataliemarie.org/uploads/1/3/0/4/130483067/bavinebanamar-pafuxureti-sakelawolalifav-xupejeg.pdf
    • http://taterbucks.com/uploads/1/3/0/8/130813609/gilatadagatejoxozuja.pdf
    • http://charlotteshope.org/uploads/1/3/0/7/130775376/3542389.pdf
    • http://webmail.lisaspykers.com/uploads/1/3/0/8/130874565/sofitilo.pdf
    • http://morocconow1.com/uploads/1/3/0/6/130620272/kuxejavabatijaja.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/2/130289504/130289504.html#http%2F%2Flearnenglishkids.britishcouncil.org+en+songs+the-abc-fruity-band

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002013.bin
1e40e98b03ddbccc880877284e0fa26e3d6152a239967a2ea6f35cc1f6244ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2013 2604 bytes
font_01_sfnt_off00002a8e.bin
05d8ee8e20ea48fd13a5f9050f25aaf85ea03c07e57433fe8b5a15e6cedd377f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8E 21348 bytes
font_02_sfnt_off00006acf.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACF 16204 bytes
font_03_sfnt_off00008310.bin
fad8c11100639469ddd78882f203297936a77351f625523e1e517068666471e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 8924 bytes

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