Malicious PDF — malware analysis report

Static analysis result for SHA-256 63420be40cd44ba3…

MALICIOUS

PDF

42.2 KB Authoring application: PDF Studio
MD5: f0b25a057656f45fa32b5ef196d1c203 SHA-1: 3e585c909f6988711205ccacffa2eda7914f1d7b SHA-256: 63420be40cd44ba3b9b9c20fe2432547de7345f2d00820b5b49f83679846427a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which are likely used to manipulate search engine results or redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a potential for further malicious activity or distribution.

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://nowallsministry.net/uploads/1/3/0/6/130620909/fc0b786c748.pdf
    • http://piloje.sber-phones.info/uploads/2020/01/28/romevawexoto.pdf
    • http://rafaperaba.fodbol7.com/uploads/2020/01/28/9152845.pdf
    • http://michaeldylanferrara.com/uploads/1/3/0/2/130291658/rukipiluzop-jurima-jevukolitimun-vivoduzifowel.pdf
    • http://sironatour.ru/uploads/2020/01/27/tisaziwo-sezilifute-letifowu.pdf
    • http://seguro-property-management.com/uploads/1/3/0/3/130313293/ribofefere.pdf
    • http://readytoadopt.ca/uploads/1/3/0/5/130550952/gekepasun.pdf
    • http://steptkd.org/uploads/1/3/0/4/130435734/34f5a6a58ef0b7.pdf
    • http://sexanaxo.freedomflow.ru/uploads/2020/01/28/1517463.pdf
    • http://ndcca2016.com/uploads/1/3/0/2/130288316/kubeburopupof-forurivujaruj-gerawatariw-zivunulugote.pdf
    • http://riversideatwollaston.com.au/uploads/1/3/0/6/130639348/zokazesudidek-rematexuviv.pdf
    • http://dracoshairco.com/uploads/1/3/0/3/130313436/1567073.pdf
    • http://alebalieiro.cl/uploads/1/3/0/6/130621095/xogos.pdf
    • http://obxaerialads.com/uploads/1/3/0/5/130539438/nutusej_xuzuxofazisekoz_mubusipurora_nakukidut.pdf
    • http://stohrs.weebly.com/uploads/1/3/0/5/130539341/f29caa5c.pdf
    • https://boxebafazen.weebly.com/uploads/1/3/0/2/130274267/nufedefavojaseke.pdf
    • http://solvemytechproblem.com/uploads/1/3/0/4/130435680/4830306.pdf
    • http://bosselitehockey.com/uploads/1/3/0/6/130639244/ce1edcd3fbff14.pdf
    • https://rativoneku.weebly.com/uploads/1/3/0/2/130287495/6249344.pdf
    • http://biscuiteering.com/uploads/1/3/0/5/130539244/220f12.pdf
    • http://teamborkowski.com/uploads/1/3/0/2/130287988/68a0f3e0.pdf
    • http://nicholassearle.com/uploads/1/3/0/5/130540645/kitexelid-togegebogi-bezixe-ganutenujexa.pdf
    • http://neokundalini.org/uploads/1/3/0/4/130483256/130483256.html#free+itinerary+template+for+bachelorette+weekend

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001736.bin
b31287636d035ea83c9ed80c1099e2ceffc1c8d14c1a0c31f372c89818497ab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1736 7924 bytes

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