Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a1cf1d5c9ddced…

MALICIOUS

PDF

40.6 KB Authoring application: PDFedit
MD5: b2b1fed3e20a24f653ac2d8376f44175 SHA-1: a0e617806d30f67bfe45539162e8ed3f3e9d5328 SHA-256: a3a1cf1d5c9ddcedb2e23232a3f555e6ca236556527526d057237ad9b2ae672f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body itself is largely unreadable due to encoding issues but contains some of the same URLs found in the heuristics, reinforcing the link farm attack pattern.

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://taracowellplain.com/uploads/1/3/0/6/130620441/8327070.pdf
    • http://segisabu.ultraviviente.org/uploads/2020/01/29/b172ea198e4.pdf
    • http://alexploreonline.com/uploads/1/3/0/6/130620482/5651515.pdf
    • http://97litefm.com/uploads/1/3/0/2/130274301/doxeporibibu.pdf
    • http://newyearswim.co.uk/uploads/1/3/0/3/130379333/daxug.pdf
    • http://div.daikabin.com/uploads/2020/01/27/vefurobib.pdf
    • https://fabudapixukam.weebly.com/uploads/1/3/0/2/130272330/juwikutadaj_muzojuvidubokab.pdf
    • http://suekodress.com/uploads/1/3/0/6/130620544/733218.pdf
    • http://scimedart.com/uploads/1/3/0/6/130621960/2533197.pdf
    • http://werajami.thisthoughts.com/uploads/2020/01/28/2411378.pdf
    • https://fipumafes.weebly.com/uploads/1/3/0/5/130543840/gosulafepan.pdf
    • http://cashsolution4homes.com/uploads/1/3/0/5/130590420/4318832.pdf
    • http://msmaco.com/uploads/1/3/0/4/130435711/2453801.pdf
    • http://mudiwemoso.qiwi-luck.pw/uploads/2020/01/28/4866228.pdf
    • http://bipegid.osoznanie.online/uploads/2020/01/28/2f37ca1097.pdf
    • http://zovi.aerogarant.moscow/uploads/2020/01/27/5d5a3cfedffc637.pdf
    • http://neilgodding.weebly.com/uploads/1/3/0/6/130620266/xaleloxulusidek_xotuk_zigalir.pdf
    • http://rosigak.posemosen123.com/uploads/2020/01/28/xikosilud.pdf
    • http://mysweatshops.com/uploads/1/3/0/3/130324030/gigememal-mudepiwosolas-wijominusonos.pdf
    • http://concordia-archives.net/uploads/1/3/0/6/130639574/8815973.pdf
    • http://agapemedped.com/uploads/1/3/0/2/130272648/45249c5e645c2d.pdf
    • http://nupelicanparty.org/uploads/1/3/0/6/130621101/130621101.html#shopping+vocabulary+worksheet+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015b1.bin
ab8ae8c086e24f297ce7ce9f3d6ed9b82960933e5936953dfb6008d749a55af6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1 7588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.