Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5989aefa33acc45…

MALICIOUS

PDF

35.5 KB Authoring application: ImageMagick
MD5: dca138540cd85dcb0bb5314c40ecb57b SHA-1: ccd065d6085b8ed7f4d2f13b2ec9ce856b414a9d SHA-256: a5989aefa33acc455383fc7c9d75b9c4fa7ff29c5d2bd27f6994778978244f5d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files. This structure is characteristic of a link farm used to distribute malicious content or conduct phishing. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample.

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://ucdemr.com/uploads/1/3/0/2/130273581/xukuxoviz.pdf
    • http://www.zoyanudelman-portfolio.com/uploads/1/3/0/2/130270987/6229943.pdf
    • http://lift4life.com/uploads/1/3/0/5/130588145/konuwix_vuxavewafuw_wupepojusez.pdf
    • http://mail2.hendersonchamber.com/uploads/1/3/0/9/130969707/giwerefudul_nebiw.pdf
    • http://broodjesboke.com/uploads/1/3/0/2/130289204/e489e30200c.pdf
    • http://theroachwarren.com/uploads/1/3/0/5/130542968/5307025.pdf
    • http://www.rehomingpaws.com/uploads/1/3/0/6/130604723/kifapen.pdf
    • http://doctorberrycounseling.com/uploads/1/3/0/6/130603767/bemefi_zekilus_pewefovifavaz.pdf
    • http://www.alinacruzfengshui.com/uploads/1/3/0/6/130639377/laniterisoxow-mamojorofe.pdf
    • http://yiechan.com/uploads/1/3/0/5/130545043/7222ec36ff.pdf
    • http://passporteworld.com/uploads/1/3/0/7/130740011/1136170.pdf
    • http://www.sacredsurrenderbirth.com/uploads/1/3/0/6/130639605/felumokageg_lijekefilu_gonukufa.pdf
    • http://anewyoubeauty.co.nz/uploads/1/3/0/5/130589171/sexem-forasumavides-gopexapa.pdf
    • http://newanday.host/uploads/1/3/0/6/130621282/pomijevoxu.pdf
    • http://mjtservices.info/uploads/1/3/0/4/130478438/guletozevobixut-lugewafibule-nuradeg.pdf
    • http://digitalvisioncenter.com/uploads/1/3/0/6/130621533/10a61e5c6724e.pdf
    • http://x0418438xstreamtravel.xsideas.com/uploads/1/3/0/9/130969489/130969489.html#icarus+and+daedalus+story+tagalog+version

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000310b.bin
a0169e27c5f6f8b543dacb53bca3eac47c15bc88ae857755c45e90a8653d6ce3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x310B 7072 bytes

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