Malicious PDF — malware analysis report

Static analysis result for SHA-256 b231c279742d7fb3…

MALICIOUS

PDF

44.1 KB Authoring application: PDFBox
MD5: 39ea25905deacceec72d7f12365c9443 SHA-1: 01ca233344aeff06647c4251c5a1e8cc62e05ef5 SHA-256: b231c279742d7fb3e0514f18114749dde804f8b3424160458707fbb6ad20ec76
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document body text is largely unreadable due to encoding issues, but the presence of numerous links suggests a phishing or SEO manipulation attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 https://jujegulenapa.weebly.com/uploads/1/3/0/3/130313193/ac2642.pdf
    • https://dejajipu.weebly.com/uploads/1/3/0/6/130604934/wuvof.pdf
    • http://lujufasobu.comparateurdesbanques.com/uploads/2020/01/27/fac852161c40ed3.pdf
    • http://jenijej.f90.ru/uploads/2020/01/27/9f2b284b8f1fa.pdf
    • http://duwixoda.aroma-piter.ru/uploads/2020/01/28/vobip.pdf
    • http://mumage.dinerotico.com/uploads/2020/01/28/gokavoxusumewu-zurinonu-wugolud-wijojanijukagaw.pdf
    • http://melodyxlove.org/uploads/1/3/0/4/130488396/daxira.pdf
    • http://tucsonmetaphysicalfair.com/uploads/1/3/0/3/130313414/xopisetetix_bibulaxa_subumejoguduf_kawogaxazebap.pdf
    • https://vuwedajekug.weebly.com/uploads/1/3/0/5/130539085/7849625.pdf
    • http://sobo.myta-salon.ru/uploads/2020/01/29/885568.pdf
    • http://labour2030.net/uploads/1/3/0/4/130435787/legugelabuwami.pdf
    • http://cheryltoh.com/uploads/1/3/0/6/130639246/dab0c3ef75e.pdf
    • https://tezupeduw.weebly.com/uploads/1/3/0/3/130313307/xoduma.pdf
    • https://xigozupeto.weebly.com/uploads/1/3/0/3/130379118/8430611.pdf
    • http://apoaaxi.org/uploads/1/3/0/2/130288392/juporonovebadez.pdf
    • http://pevevize.businesgym.ru/uploads/2020/01/27/739461.pdf
    • http://jodo.yusufkalayci.com/uploads/2020/01/28/ddc010.pdf
    • http://xob.mkubcm.ru/uploads/2020/01/28/pukewob.pdf
    • http://mendezmendez6biome.weebly.com/uploads/1/3/0/6/130604319/2b19d02dcf.pdf
    • http://iwa-tellmyanmar.com/uploads/1/3/0/5/130552073/7319026.pdf
    • http://joshua-linder.com/uploads/1/3/0/5/130588833/3719154.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/4/130488304/130488304.html#english+story+books+for+beginners+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000160c.bin
bf241840d10983133d70820093acb0f7084ea253fffff18d9b9773ce6bc48890		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160C 8068 bytes

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