Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b273b159be042ac…

MALICIOUS

PDF

38.0 KB Authoring application: Mobipocket Creator
MD5: 483145fc48eb770de25e17915fe47235 SHA-1: 582f764a84268cfad0b9f3edc03ca8a99f07f487 SHA-256: 6b273b159be042ac57ef50669192fb249c8b8d448416c327178ab335f5a13554
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or malicious distribution intent. The ML classifier also strongly flagged this PDF as malicious.

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://christianhartsough.com/uploads/1/3/0/5/130539279/4520572.pdf
    • http://newburyparkacupuncture.com/uploads/1/3/0/7/130775062/4d11db8ff.pdf
    • http://mta-sts.mail.tcnoodleshack.com/uploads/1/3/0/6/130604009/rujakuzoguse.pdf
    • http://cqsbrecit.ca/uploads/1/3/0/4/130489527/8104756.pdf
    • http://routt4hscholarship.com/uploads/1/3/0/7/130775731/revulekefuga-vanunezus.pdf
    • http://wuhanrobotweld.com/uploads/1/3/0/3/130313343/newizajuf-xodelafakeli.pdf
    • http://cleanallpm.ca/uploads/1/3/0/5/130544790/borofonawalewax.pdf
    • http://chelseabaybooks.com/uploads/1/3/0/5/130546885/pijituda-diwisotok-lafetonako.pdf
    • http://morrisseauartist.com/uploads/1/3/0/4/130477074/bafe462.pdf
    • http://101bamboofins.com/uploads/1/3/0/3/130313148/bexupasipegijax-gawoxapivafosi-soragomirabamu.pdf
    • http://designerin-sucht-technikjob.de/uploads/1/3/0/3/130323113/remobanoxini.pdf
    • http://jessethorn.com/uploads/1/3/0/7/130776394/45d2b526.pdf
    • http://agentemily.com/uploads/1/3/0/6/130621285/6067cea0bd8c06.pdf
    • http://www.prositepropertyinspections.com/uploads/1/3/0/4/130435562/752721f4e908.pdf
    • http://oregonnw.net/uploads/1/3/0/4/130476351/5cec3eed7030.pdf
    • http://tac17.com/uploads/1/3/0/7/130738889/xawexokevos.pdf
    • http://www.shop.interiorwellbeing.com/uploads/1/3/0/3/130379529/sarimeletu.pdf
    • http://oceannotions.com/uploads/1/3/0/2/130289589/pamupuk.pdf
    • http://umadevimohan.com/uploads/1/3/0/4/130483393/ledibujekopa.pdf
    • http://4t51w5.salon225.com/uploads/1/3/0/5/130542863/130542863.html#activemq+spring+integration

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003483.bin
726e382e28f6648987f3a38466c63f37f6bb43ac759fb7b8d1777f3dd99d2d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3483 8332 bytes

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