Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c1debffd26138db…

MALICIOUS

PDF

43.3 KB Authoring application: Karbon
MD5: 2dc05cd194bed2774c1372c5787ab40e SHA-1: 793330a4dd210ebcabff73ef743e95604b9f0507 SHA-256: 4c1debffd26138db6b9a96a7277ae7835a9bb8bab5828c5dfafbfdff39596775
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to host phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted, but the heuristic 'PDF_SEO_LINK_FARM' confirms the malicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://reinasporunacausa.com/uploads/1/3/0/5/130590778/zanusa_paraminifi.pdf
    • http://happyvids.com/uploads/1/3/0/6/130604105/kemogupegokevujimine.pdf
    • http://3cfxinvestment.top/uploads/1/3/0/5/130539188/1871992.pdf
    • http://danielgsinclair.com/uploads/1/3/0/5/130550655/8700423.pdf
    • http://chicagonewconstructionlistings.com/uploads/1/3/0/8/130814731/sanupojir-lilizosepagol-lovuxububurop.pdf
    • http://motherofbrumbies.com/uploads/1/3/0/6/130620604/8812530.pdf
    • http://danicagoward.com/uploads/1/3/0/8/130814439/safekalatinowugo.pdf
    • http://mysmartptt.com/uploads/1/3/0/6/130605426/sikixevituwapidiza.pdf
    • http://thatsgoodthat.com/uploads/1/3/0/2/130273573/5941d76ec4.pdf
    • http://art4peace.net/uploads/1/3/0/4/130483886/kemijabiwira.pdf
    • http://sweetestdreams.org/uploads/1/3/0/4/130477131/130477131.html#aristotle+onassis+net+worth+2016
    • http://motherofbrumbies.com/uploads/1/3/0/6/130620604/8812530.pd

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ecf.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECF 16036 bytes
font_01_sfnt_off000042e6.bin
b0a6a33381002d1c379ca931d660fe98df7a73518421c8b234b9dc16af60e95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42E6 2696 bytes
font_02_sfnt_off00004f60.bin
7aa7643b7810dad3b9c0c19b71281b8b40664778931ce1bc5c036318c209c7e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F60 9352 bytes

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