Malicious PDF — malware analysis report

Static analysis result for SHA-256 076b4e38f92090d4…

MALICIOUS

PDF

34.6 KB Authoring application: LibreOffice
MD5: b64a035b1633379454df255e1a48f692 SHA-1: 9bf0ad700d7bd823b908cd01c985715a526192d9 SHA-256: 076b4e38f92090d4e4be69f468de1aa31d485bbe53a24d20aa9fb30bf2180046
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as phishing or a downloader. While no scripts were explicitly extracted, the PDF structure and URL farm suggest it's designed to redirect users to potentially harmful sites.

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://talap.uristy-lawyer.moscow/uploads/2020/01/29/masuwojos.pdf
    • https://xepenagazo.weebly.com/uploads/1/3/0/4/130476318/dokege.pdf
    • https://dasivizu.weebly.com/uploads/1/3/0/2/130270811/1606059.pdf
    • http://misobuildingptyltd.com/uploads/1/3/0/3/130379331/4915644.pdf
    • http://betterwithcontxt.com/uploads/1/3/0/6/130620853/9455827.pdf
    • https://detamifadobikiw.weebly.com/uploads/1/3/0/5/130588268/koguluzebudalode.pdf
    • http://shopsassybee.com/uploads/1/3/0/5/130590687/7448039.pdf
    • http://zuso.caverna.info/uploads/2020/01/28/sixiremafa.pdf
    • http://mikekelley.us/uploads/1/3/0/5/130551524/4400625.pdf
    • http://netspeedsolutions.com/uploads/1/3/0/4/130483270/lomexez.pdf
    • http://airguardian2.com/uploads/1/3/0/4/130477090/jozoporapapekebo.pdf
    • http://ofisvarendy.ru/uploads/1/3/0/5/130590215/470b2b943befd.pdf
    • https://kabezujiwufod.weebly.com/uploads/1/3/0/5/130542964/rumikazupakinogado.pdf
    • http://kucukevrenim.com/uploads/2020/01/28/jimavikejaje-ponemuwave-kokikifuwup.pdf
    • http://bennettcoffeeroastingcompany.com/uploads/1/3/0/2/130289224/137799.pdf
    • http://lukabu.minzdrvonline.ru/uploads/2020/01/28/2820297.pdf
    • http://uwhqsc.org/uploads/1/3/0/5/130588531/bobinu_gemitikubaximun_zoduna.pdf
    • http://mexicolegalhelp.com/uploads/1/3/0/6/130622116/bodalenupofez_tovelef.pdf
    • http://alecworley.weebly.com/uploads/1/3/0/5/130550769/retumilu_kunisedajopu_liputomosufo_zugebo.pdf
    • http://carasoul.com/uploads/1/3/0/5/130588554/7571550.pdf
    • http://theflorecerproject.com/uploads/1/3/0/5/130539419/3091796.pdf
    • http://safeketozone.com/uploads/1/3/0/6/130604359/kixijebajudarem-dovovel-favelodida-lasati.pdf
    • http://colddiamnd.com/uploads/1/3/0/4/130488469/130488469.html#imagine+dragons+believer+live+video

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016f6.bin
d58acf8b751bd69a91e24d58837a808c5334ca06f362c3113074bec7512af876		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F6 8320 bytes

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