Malicious PDF — malware analysis report

Static analysis result for SHA-256 86791d397cc236e6…

MALICIOUS

PDF

36.5 KB Authoring application: Karbon
MD5: 34c983b103a3797907b89f5de1f01e95 SHA-1: 86792303300b2409e4cd33bcb82c1b237425b034 SHA-256: 86791d397cc236e63dd94a9ff2e403809d6ac89b27be1cfad5ed2b888159bd34
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 ClamAV and an ML classifier, indicating malicious intent. The PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded URLs pointing to external PDF files. This suggests a link farm or redirection strategy, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted from this sample.

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://obrothersdetailing.com/uploads/1/3/0/6/130640146/3123232.pdf
    • http://miriamterron-elder.com/uploads/1/3/0/3/130313170/ritabitolu.pdf
    • http://deletecoinbase.com/uploads/1/3/0/5/130588693/2439009.pdf
    • http://themanadvice.com/uploads/1/3/0/6/130640081/sexure_baxuwu_jasixaresudodot_toraku.pdf
    • http://adrenalinedanceamplified.com/uploads/1/3/0/5/130546432/segev_dukepit.pdf
    • http://jeanniehouchins.com/uploads/1/3/0/5/130589391/dagaxirize.pdf
    • http://2018awpga-ns.com/uploads/1/3/0/6/130620428/kigupir.pdf
    • http://brochuaccounting.com/uploads/1/3/0/6/130605253/gamitote-bozirekole-filez-rizapukoguxow.pdf
    • http://briarwoodestatesapt.com/uploads/1/3/0/5/130590351/f847ef0a994fb36.pdf
    • http://adagencyvaluations.net/uploads/1/3/0/3/130313378/kekegutaj.pdf
    • https://tofuforisebize.weebly.com/uploads/1/3/0/2/130287875/sedegakonamim-bovuwinote.pdf
    • http://thesingbabysingshow.com/uploads/1/3/0/5/130589251/130589251.html#free+flute+sheet+music+movie+soundtracks

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001330.bin
a6e3cf848c8fa61ed156946a2c25611fa95fac133d8d8cf626a93873531f2bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1330 8628 bytes

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