Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b10efc9de94d0a…

MALICIOUS

PDF

40.4 KB Authoring application: Soda PDF
MD5: dfa0ad85903c524b5f6d891fe47eba74 SHA-1: c2a7bcfeba811cbfdbc4aff3a2f35932e965a123 SHA-256: a2b10efc9de94d0a3891d51731404bada31b449d63883fad4084336a839ed59e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The embedded links are the primary IOCs, directing users to potentially harmful content.

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://oasischronicles.com/uploads/1/3/0/3/130323743/lufoxabuzetafu.pdf
    • http://www.beautifulneuralnetworks.com/uploads/1/3/0/9/130969820/wanabep_mijovasaperuro.pdf
    • http://ceecentre.com/uploads/1/3/0/8/130874394/1436535.pdf
    • http://davidkirschnermusician.com/uploads/1/3/0/6/130604227/4145563.pdf
    • http://www.ginkgotree-advisors.de/uploads/1/3/0/6/130620154/galilenem_fupuzevejukawob.pdf
    • http://cufftie.com/uploads/1/3/0/5/130589308/290a81aa11.pdf
    • http://www.johnmorrispiano.com/uploads/1/3/0/2/130270864/98a619fd108d60a.pdf
    • http://bambooandroses.org/uploads/1/3/0/4/130491757/vudupidilubov.pdf
    • http://dream-job.site/uploads/1/3/0/6/130620813/rigivobofe_janomum_taxogezumi.pdf
    • http://cofimpro.com/uploads/1/3/0/6/130620337/7904162.pdf
    • http://www.mbwvoice.com/uploads/1/3/0/7/130776855/3973482.pdf
    • http://www.abileneapplianceservice.com/uploads/1/3/0/5/130543656/sukemikifuluges_pifizosofamapew_dumidubotivive.pdf
    • http://warriorstrongadventures.com/uploads/1/3/0/6/130621625/resevenomoruka-soxekojuvurap.pdf
    • http://barbspeachyclean.net/uploads/1/3/0/2/130289649/suwimeg_pidod_gasarogivubap_jeguredigikekem.pdf
    • http://www.aenderungschneiderei-musovic.com/uploads/1/3/0/7/130738883/2602309.pdf
    • http://flatlandultrarunner.net/uploads/1/3/0/4/130490584/kilabujewo-tivepu.pdf
    • http://robertshrigleywoolf.com/uploads/1/3/0/6/130604430/130604430.html#postpartum+depression+scale+pdss

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035d1.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35D1 2600 bytes
font_01_sfnt_off00004160.bin
ca863aafb1fba20c581e3bc39b5a2dfd0bf1ebbe9d569e8f9da181dd3338c6c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4160 7988 bytes

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