Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec854a0cc50aa3e3…

MALICIOUS

PDF

58.4 KB Authoring application: pstoedit
MD5: e07189812b2add0b8c2477d462c049b0 SHA-1: 29b92a04ef9373d7fa43c10def501d5c3656e51c SHA-256: ec854a0cc50aa3e35d735b6f262ddffd06d72fe149c44909cfd47a0dd15953c6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded URLs pointing 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 or traffic redirection. No scripts were extracted, but the sheer volume of linked PDFs suggests a coordinated effort to drive traffic or deliver payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seldomimages.com/uploads/1/3/0/5/130551094/zusev.pdf
    • http://nourishinglynatural.com/uploads/1/3/0/5/130540116/0a0151309903b.pdf
    • http://constructioninsurance.net/uploads/1/3/0/5/130551001/8490692.pdf
    • http://espaces.cz/uploads/1/3/0/2/130287279/napepebi.pdf
    • http://journeyfilm.net/uploads/1/3/0/8/130814510/7578519.pdf
    • http://abgymcr.com/uploads/1/3/0/5/130539928/jukanubepiw.pdf
    • http://zhiraf.site/uploads/1/3/0/7/130775724/depudug.pdf
    • http://lianafaith.net/uploads/1/3/0/4/130489371/piguma.pdf
    • http://ardentbliss.com/uploads/1/3/0/6/130604639/pudapifuturiluw-xewazewisuse-lupedozetulo.pdf
    • http://joyfullnight.com/uploads/1/3/0/6/130621665/e85a4a1e66fa.pdf
    • http://ubs-taxfree-puertorico.com/uploads/1/3/0/4/130483191/6544618.pdf
    • http://notionsbynonna.com/uploads/1/3/0/4/130436204/basonu.pdf
    • http://ridgelineohio.com/uploads/1/3/0/4/130488282/zenebuv-nubigu.pdf
    • http://whatisdarkfiber.com/uploads/1/3/0/4/130483512/ed5e3b9bd8.pdf
    • http://mission-scamper.com/uploads/1/3/0/7/130739269/duxumil-manidujima.pdf
    • http://rachelmcoburn.net/uploads/1/3/0/6/130639226/4336173.pdf
    • http://ajointvisionllc.com/uploads/1/3/0/6/130639766/2182562.pdf
    • http://toursofcalifornia.com/uploads/1/3/0/5/130588378/naditele.pdf
    • http://mrhandgun.com/uploads/1/3/0/6/130621700/mudozuxila_pezorokotuno.pdf
    • http://selimpension.com/uploads/1/3/0/8/130815664/602282c1628c.pdf
    • http://mrmuhammadmusic.com/uploads/1/3/0/6/130621436/545128.pdf
    • http://nomnomnatural.com.au/uploads/1/3/0/5/130546283/xipit.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/7/130775358/130775358.html#icd+10+code+for+severe+preeclampsia+postpartum

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015c6.bin
b276ea40e206c0f16eb4c972f9d0717d1121e70a8ac80d679e633baf895ee67c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C6 8596 bytes
font_01_sfnt_off00009cb0.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB0 16036 bytes

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