Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1fee890c46f7c09…

MALICIOUS

PDF

38.2 KB Authoring application: GIMP
MD5: e0a3cad4e04b52f92236964cc7459273 SHA-1: adc1cd250e331bb45bb39de5d507b8b623adb508 SHA-256: b1fee890c46f7c092c371c3ca06e0c9522a376f19310651c27ecdc05e175be96
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents hosted across various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is commonly used to distribute malicious content or conduct phishing attacks by overwhelming search engines or directing users to potentially harmful sites. The ML classifier and ClamAV detection further support the malicious nature of this file.

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://kickoutcaseyscarlisle.com/uploads/1/3/0/2/130272470/8462873.pdf
    • http://www.blindfirestudios.com/uploads/1/3/0/2/130271111/f7773.pdf
    • http://lacollectiva.org/uploads/1/3/0/3/130313803/xupopogukoxip-faxidikinu-pines.pdf
    • http://alexploreonline.com/uploads/1/3/0/7/130776420/3584573.pdf
    • http://www.briennehennessy.com/uploads/1/3/0/4/130491179/gilufi.pdf
    • http://heatherjarman.org/uploads/1/3/0/6/130621298/8d9e3dc4.pdf
    • http://austinwholesalehair.com/uploads/1/3/0/5/130588966/sinovape.pdf
    • http://novazaco.com/uploads/1/3/0/7/130740556/saves_nikas_rabikimimugak_xakorukibuz.pdf
    • http://www.gaieventrental.com/uploads/1/3/0/4/130435780/cd5fc2658d3b53.pdf
    • http://katelwalkerlcsw.com/uploads/1/3/0/4/130435892/e88c1af1a7.pdf
    • http://occseagles.org/uploads/1/3/0/4/130435654/1027026.pdf
    • http://amplusadvecta.com/uploads/1/3/0/5/130539726/jaterenafuf.pdf
    • http://adancerstouch.com/uploads/1/3/0/4/130477090/reberewatuwor-tabagimetivurav-vuxatixafe.pdf
    • http://wavwg.com/uploads/1/3/0/7/130775341/woregubuxeku.pdf
    • http://08bbf7.com/uploads/1/3/0/6/130605076/xasoxu_dutugowimusot.pdf
    • http://codyjscott.org/uploads/1/3/0/2/130289669/ruxoniduvutupifalisi.pdf
    • http://best-sil.com/uploads/1/3/0/7/130775277/retazijo.pdf
    • http://innosol.org/uploads/1/3/0/4/130483956/vewuxuwasarixo-xevofago-tevur-sorinedisufe.pdf
    • http://theprettybarllc.com/uploads/1/3/0/8/130874540/xudobirosejunokud.pdf
    • http://tsv-fcblegenden.de/uploads/1/3/0/7/130738701/tolepasen.pdf
    • http://wwwmyhero1.com/uploads/1/3/0/8/130814011/5e5542c64ca0.pdf
    • http://manningmobilemechanical.com/uploads/1/3/0/3/130323997/7b26c877f7af.pdf
    • http://sfsecuritysolutions.com/uploads/1/3/0/7/130740371/0a8634c8.pdf
    • http://blackdragonvodka.com/uploads/1/3/0/6/130639062/e945ee8.pdf
    • http://wordsmith-sg.com/uploads/1/3/0/3/130323571/130323571.html#british+council+ielts+general+reading+practice
    • http://codyjscott.org/uploads/1/3/0/2/130289669/ruxoniduvutupifali

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031bf.bin
cef15728336255545e4fee788e4041718e8d477da7eef4905faa26c884051d28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31BF 7988 bytes

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