Malicious PDF — malware analysis report

Static analysis result for SHA-256 71d54470f7fb7da0…

MALICIOUS

PDF

42.3 KB Authoring application: Nitro PDF
MD5: e7eb5f90a07054ab6f7af7f51b00e7f2 SHA-1: 1184feacce4ecb16af369b0fa26efd4a8b45259a SHA-256: 71d54470f7fb7da0f6776aa1ddf353abac10f4f60846d5173298dc44ed7c538f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malicious payloads. ClamAV detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or malicious distribution intent. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious intent 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://motelpresidente.com/uploads/1/3/0/8/130814009/1806632.pdf
    • http://wrfabc.ca/uploads/1/3/0/7/130775778/xapaf.pdf
    • http://lifegot.com/uploads/1/3/0/7/130738805/wasate-kugub.pdf
    • http://boogienightz.com/uploads/1/3/0/8/130814176/2377091.pdf
    • http://www.vicekdesigns.com/uploads/1/3/0/5/130589334/2e27cc.pdf
    • http://lumlatist.com/uploads/1/3/0/5/130588570/wuvifatufole.pdf
    • http://foottherapies.co.uk/uploads/1/3/0/2/130291822/bixedujerupuf.pdf
    • http://advancedbiocomputing.net/uploads/1/3/0/6/130620889/3385015.pdf
    • http://mx.goodshepherddayschool.org/uploads/1/3/0/6/130621015/4738040.pdf
    • http://apexformulas.com/uploads/1/3/0/7/130775321/datav.pdf
    • http://mlp-losses.com/uploads/1/3/0/5/130590138/marimexumuvisaf.pdf
    • http://jainsurors.com/uploads/1/3/0/2/130288534/nolud.pdf
    • http://dianebrowncolourspecialist.com/uploads/1/3/0/4/130476122/doloboxekuzerufiv.pdf
    • http://www.penagraphservice.com/uploads/1/3/0/2/130288391/bafuwumojisuk.pdf
    • http://spinpop.nl/uploads/1/3/0/7/130775714/jivis-lanegeme-wanujofewifeli.pdf
    • http://behinddaytona.com/uploads/1/3/0/6/130639852/semotitadupalovumave.pdf
    • http://iphoneipadpublisher.com/uploads/1/3/0/4/130483973/lodidukukiz_netilawej_fojasuduzabum_zatebereziz.pdf
    • http://sigmapivu.com/uploads/1/3/0/5/130543539/6044068.pdf
    • http://bootstrappingbettys.com/uploads/1/3/0/3/130313363/7686650.pdf
    • http://magic-life.com.tw/uploads/1/3/0/2/130291699/tojado.pdf
    • http://ogdenlfl.com/uploads/1/3/0/3/130379155/vorotogusesof.pdf
    • http://micromulsion.com/uploads/1/3/0/7/130738641/20801f9133f31f.pdf
    • http://www.nylamikaelsonsstory.com/uploads/1/3/0/8/130874620/bakeraposamajedi.pdf
    • http://mail.naturalborninsomniac.com/uploads/1/3/0/7/130775651/5106359.pdf
    • http://x0478527xstreamtravel.xsideas.com/uploads/1/3/0/9/130969262/130969262.html#build+2d+game+unity

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004199.bin
d3ef2b92758ab2ca9117d60ab0a70b7fd743ef980377abe9a79c7e055c41d7c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4199 8180 bytes

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