Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2b76d81753ba79…

MALICIOUS

PDF

40.3 KB Authoring application: Mobipocket Creator
MD5: d0fbe4f2b61ccd23c32bb03c2424a682 SHA-1: f7186b2a46e4f7768a501a0c1ed9982d329b7596 SHA-256: 0a2b76d81753ba798ea2383a067c79c7d6e664cc40ba288ae6fad10dc67e513e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting a link farm designed to redirect 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://junglejimswindowcleaning.com/uploads/1/3/0/2/130288361/patelinofuwunob.pdf
    • http://pmk-metall.ru/uploads/2020/01/27/2047d39fdcf.pdf
    • http://544gorhamroad.com/uploads/1/3/0/2/130289365/045b4e15.pdf
    • http://chante.me/uploads/1/3/0/6/130604207/zekujefexodon_kowuzelo_rakudibo.pdf
    • http://bix.handorinservice.ru/uploads/2020/01/27/sepuxatewijera.pdf
    • http://techindulgence.com/uploads/2020/01/28/a6983828a537.pdf
    • http://jiwewenapa.pas-safe.com/uploads/2020/01/28/c28abd9648f8cc5.pdf
    • http://ezgocentralillinois.com/uploads/1/3/0/2/130291036/tedajuw-waximedapel-tenerune-libiximupuro.pdf
    • https://xagitobikagovam.weebly.com/uploads/1/3/0/6/130604656/60639ed8c3e.pdf
    • http://banav.lanworldnet.com/uploads/2020/01/27/gexabazonikesar.pdf
    • http://gax.postroisvoydom.ru/uploads/2020/01/28/sotawupeni.pdf
    • http://okfabric.ru/uploads/2020/01/27/wopikasozegoke.pdf
    • http://ncohouston.org/uploads/1/3/0/5/130589362/diforir-masadep-guteva-mozalovaje.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130588467/130588467.html#evolution+biology+class+12+notes+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c1.bin
99c403d84be74c2be2fec159d451d0003669cff05a2bb81b454a56d6971f6473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C1 8264 bytes

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