Malicious PDF — malware analysis report

Static analysis result for SHA-256 1479250517037c87…

MALICIOUS

PDF

53.0 KB Authoring application: Nitro PDF
MD5: bfe600b7a12c7d2c0d96b5e9ed88de4b SHA-1: 65a92d45d284ee88cd9ba65415b8b7f1cc178b5c SHA-256: 1479250517037c87e6994c769a221b4ec67f2e1a561994b20385adca70be123d
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. No scripts were extracted, but the sheer volume of linked external PDFs suggests a coordinated effort to direct users to potentially harmful content.

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://xlupublishing.com/uploads/1/3/0/6/130620755/369d4fa.pdf
    • http://overlandremovalsairliebeach.com/uploads/1/3/0/5/130551253/vetukoj.pdf
    • http://topiarycatalog.com/uploads/1/3/0/6/130604658/9892251.pdf
    • http://www.dubowpsychology.com.au/uploads/1/3/0/2/130270785/kozasadoveje.pdf
    • http://drjanicecheng.com/uploads/1/3/0/6/130604739/lutarasokumebug.pdf
    • http://quantumlevelsoulhealing.com/uploads/1/3/0/5/130545681/gorupopitu_zimerezixuzen_najogibovigejip.pdf
    • http://yesgonzalez.com/uploads/1/3/0/7/130776321/49e06518.pdf
    • http://thesocialhouse.agency/uploads/1/3/0/5/130539654/6277774.pdf
    • http://musicadventure.net/uploads/1/3/0/4/130476700/satonag-rumamer-munexofiwenod-pafovimil.pdf
    • http://konighausus.com/uploads/1/3/0/7/130775376/solirije-nitexorigiloj-fejodixaremed-xagirulov.pdf
    • http://mylighthouselearning.com/uploads/1/3/0/4/130476065/fezerujuzavupewuxu.pdf
    • http://bonitalawsonrn.com/uploads/1/3/0/2/130289367/fcc119a813c0.pdf
    • http://mbloomconsulting.com/uploads/1/3/0/3/130379675/958fd3cdd15d.pdf
    • http://breathingzonetechnologies.org/uploads/1/3/0/5/130588894/8416135.pdf
    • http://motelpresidente.com/uploads/1/3/0/5/130545633/cabb91a66bb.pdf
    • http://dandglettings.com/uploads/1/3/0/4/130478602/2b3ea3bf0a.pdf
    • http://northeastfjord.com/uploads/1/3/0/3/130313002/vitusanonupe.pdf
    • http://servilim.org/uploads/1/3/0/6/130604782/2e3722ef34a6bc.pdf
    • http://mspennylane.com/uploads/1/3/0/7/130740084/zinuda.pdf
    • http://thefantasyparis.com/uploads/1/3/0/3/130313309/dudomilibemusizina.pdf
    • http://wordsmith-sg.com/uploads/1/3/0/8/130813705/130813705.html#gramatica+present+tense+of+ar+verbs+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c1.bin
7b2b53afa136ae78561e661fbad4f2488bd47bb14a303b8f068036f94d2985c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1 9044 bytes

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