Malicious PDF — malware analysis report

Static analysis result for SHA-256 75af916d8609db83…

MALICIOUS

PDF

143.9 KB Authoring application: Serif PagePlus
MD5: 05619c0266fdd690933fa5f29f00b72b SHA-1: 9eeaa1b60634acfe15e70336cd79b1416699c310 SHA-256: 75af916d8609db835c0c0b94fbbcda3cfc11465872f77a9e431dfd0c14dbb443
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files, suggesting a link farm designed to distribute malicious content or engage in SEO abuse. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://www.carolinadancecollaborative.com/uploads/1/3/0/7/130739711/diwutarawu.pdf
    • http://www.lbc-events.de/uploads/1/3/0/2/130273907/vejusogewobizajogil.pdf
    • http://matthiasferber.com/uploads/1/3/0/3/130323723/1291d48d38b7.pdf
    • http://getautomotiv.com/uploads/1/3/0/6/130621937/notali.pdf
    • http://www.knitstitchsew.ca/uploads/1/3/0/7/130740191/rowuvibejugoladaka.pdf
    • http://striba.net/uploads/1/3/0/6/130620395/7754849.pdf
    • http://recardiolt.xyz/uploads/1/3/0/4/130435876/pavomorezaxe.pdf
    • http://elder-well.net/uploads/1/3/0/3/130313391/8359722.pdf
    • http://rainydayfilm.com/uploads/1/3/0/6/130604769/niniwufus.pdf
    • http://alanjonesart.com/uploads/1/3/0/6/130639115/8978983.pdf
    • http://kingswoodsquare.com.au/uploads/1/3/0/7/130776366/nibalitanam.pdf
    • http://0negocios.biz/uploads/1/3/0/7/130775904/e7bbafdb9150287.pdf
    • http://houstoncx.com/uploads/1/3/0/4/130488500/gupapitejozu_fupiwuruwukuz_rilawuk.pdf
    • http://nightingaleicecreamsandwiches.com/uploads/1/3/0/5/130542758/7e6e9.pdf
    • http://consortiaservices.com/uploads/1/3/0/4/130435680/82fd3670ebcb89.pdf
    • http://mta-sts.mail.biblicalintensives.com/uploads/1/3/0/8/130813778/130813778.html#modern+period+of+english+literature+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001640.bin
cf472be6a49db4eba0ac61dba57249c2c3c09be0a621610212aada4b72759cb3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1640 11248 bytes