Malicious PDF — malware analysis report

Static analysis result for SHA-256 91834a9311d2aab2…

MALICIOUS

PDF

42.0 KB Authoring application: Scribus
MD5: c80f47cb7d8386bcb3cd1aa7d1207671 SHA-1: c7c42d644098295925554e63fde42dfd2d67238c SHA-256: 91834a9311d2aab203bbc11667573de49dd3979f0c029cc09ac96321866ab7f4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains. This is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically related to phishing or traffic redirection. 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://inspirehabits.com/uploads/1/3/0/7/130776225/wazidifu_wodenamunaza_sekaduvema.pdf
    • http://knowvirtue.net/uploads/1/3/0/6/130639914/9756f99e74049d1.pdf
    • http://mentorgeek.net/uploads/1/3/0/3/130323738/fezodujuteti-supepigavaviwej.pdf
    • http://www.deannapaulsen.com/uploads/1/3/0/7/130738647/9089817.pdf
    • http://csvpublications.com/uploads/1/3/0/5/130541846/4409267.pdf
    • http://vorrax.store/uploads/1/3/0/2/130272600/jimizu.pdf
    • http://www.quartzbeautybar.com/uploads/1/3/0/5/130543155/9194592.pdf
    • http://littlebrasselephant.com/uploads/1/3/0/3/130323293/d986251d7e.pdf
    • http://casadelloco.com/uploads/1/3/0/3/130379067/xegixepuxew.pdf
    • http://mitchellsempowerment.org/uploads/1/3/0/4/130435635/wujinalozebexivofixu.pdf
    • http://heathersbebeautifulbling.com/uploads/1/3/0/6/130620979/titonini-bigazege.pdf
    • http://discountcannadelivery.com/uploads/1/3/0/7/130739719/a3c884e629d4.pdf
    • http://neurologiccare.com/uploads/1/3/0/4/130476880/6792625e73a0ee3.pdf
    • http://sharpshotshop.com/uploads/1/3/0/4/130435895/8355824.pdf
    • http://aacnhillcity.com/uploads/1/3/0/6/130621135/zokej.pdf
    • http://theglutegrinder.org/uploads/1/3/0/3/130323409/nulozi.pdf
    • http://facultynyc.com/uploads/1/3/0/3/130324331/wodidusetexa-fetorerewowo-wumiwo-timobufigaxa.pdf
    • http://happylion.live/uploads/1/3/0/6/130621218/1599703.pdf
    • http://jackseverydaymusic.com/uploads/1/3/0/6/130620888/61abc74e2.pdf
    • http://mta-sts.mail.rusticridgelabs.com/uploads/1/3/0/5/130550770/zelolokigile.pdf
    • http://jccartstudios.org/uploads/1/3/0/2/130273571/jujikitenodaxefebuk.pdf
    • http://abbreviate16.pleasingfood.com/uploads/1/3/0/4/130479082/130479082.html#crear+base+de+datos+en+mysql+server
    • http://neurologiccare.com/uploads/1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042dc.bin
164f00e8688660d47941d0c26f42248e1dbd518c35c3613f2a4fd687bbe2d3b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42DC 8772 bytes

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