Malicious PDF — malware analysis report

Static analysis result for SHA-256 85757ad651c7f74d…

MALICIOUS

PDF

39.4 KB Authoring application: PDFedit
MD5: 0aa357198bbef25fcf2bb1720652d2aa SHA-1: 89229959f531455905974d007bb795bb723401d0 SHA-256: 85757ad651c7f74da5e7cd1d08c24fcc3fc21da607946bd40f94a938dfa42932
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 hosted on various domains. This pattern is indicative of a link farm or a phishing campaign designed to distribute malicious content or redirect users to malicious sites. The ClamAV detection and ML classifier strongly support its malicious nature.

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://myempoweringyouth.com/uploads/1/3/0/4/130488993/nulitopoti.pdf
    • http://nwwriters.com/uploads/1/3/0/5/130540172/2609153.pdf
    • http://www.kaylinacastlehill.com.au/uploads/1/3/0/5/130539922/60fe64616.pdf
    • http://catholicfamily-games.com/uploads/1/3/0/2/130271212/2628248.pdf
    • http://messiniako-catering.com/uploads/1/3/0/4/130436272/626ceee8cc4.pdf
    • http://rebeccasiswick.com/uploads/1/3/0/4/130478566/8fafde.pdf
    • http://oceanpsalms.com/uploads/1/3/0/3/130379065/1762050.pdf
    • http://www.paintingwithoutthenumbers.com/uploads/1/3/0/8/130874349/efbe9098.pdf
    • http://fotoprofissional.com/uploads/1/3/0/4/130436127/c2fa34003b3.pdf
    • http://notably.com.au/uploads/1/3/0/4/130476413/a4128a7f.pdf
    • http://myindependentkids.com/uploads/1/3/0/6/130639949/3f0941.pdf
    • http://norcaltaxi.net/uploads/1/3/0/4/130478609/notarebebim.pdf
    • http://scottbrownconsults.com/uploads/1/3/0/2/130270859/862a3a.pdf
    • http://mindmeltgames.com/uploads/1/3/0/6/130621411/tavebokutunezo-zitiraritebab-waluvokozam.pdf
    • http://nevewinter.com/uploads/1/3/0/5/130590203/siluwedop.pdf
    • http://test.jardingallery.com/uploads/1/3/0/6/130604303/fekunotajizimiwam.pdf
    • http://hostmaster.virtuago.it/uploads/1/3/0/8/130874239/vojobadawasabiw-dotib-gakikujawup.pdf
    • http://bartsbullets.com/uploads/1/3/0/6/130605344/7066fef52db9.pdf
    • http://bradleysteelbuilding.com/uploads/1/3/0/3/130313123/nipejejokiratu-wuxuratebe-porarute.pdf
    • http://mirroryourbrilliance.com/uploads/1/3/0/6/130639613/5958165.pdf
    • http://aitoronto.org/uploads/1/3/0/6/130621620/6030817.pdf
    • http://goodinform.com/uploads/1/3/0/7/130738859/4753507.pdf
    • http://wcd-bzi78bsj.mgh-r.ch/uploads/1/3/0/4/130490561/130490561.html#ableton+live+looper+plugin+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000038e5.bin
1a4dab60af477f9a8a175904642ea523027fd2e03cc436342449647197cf270d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38E5 7848 bytes

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