Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d157029b424ab9…

MALICIOUS

PDF

43.3 KB Authoring application: Smallpdf Desktop
MD5: 4081a9e91ad6c40eb06998bd0583ecda SHA-1: cec21fc51cf0552f5f616bb934eb9396008fde98 SHA-256: 10d157029b424ab9eddf1bcf4ebbd499325672e436220b83ca12db314ce118cb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, likely serving as download sources for further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://youreventdecorator.com/uploads/1/3/0/6/130604498/7828f1.pdf
    • http://nyanyanizhniynovgorod.ru/uploads/1/3/0/3/130312973/butufawil_tofox_xanimiruzopa.pdf
    • http://74-123-78-59.mgwnet.com/uploads/1/3/0/4/130479123/metuvanijomimafuzidu.pdf
    • http://woodyswebwatch.com/uploads/1/3/0/6/130603696/kexikamebi_rejulitugemerun_netonafan.pdf
    • http://alexgumpel.com/uploads/1/3/0/7/130738569/xutuwufajuja.pdf
    • http://rebooting.org/uploads/1/3/0/3/130323794/jirabewetiwuzujubezo.pdf
    • http://redneckridgeriders.com/uploads/1/3/0/6/130620365/gakonigadoro_madidoka_nuvegeja_rolisilamupo.pdf
    • http://www.mccr.services/uploads/1/3/0/7/130739240/8697529.pdf
    • http://pennysyoga.com/uploads/1/3/0/2/130288522/xejagivovud_kaxafone_nikoketopijige.pdf
    • http://stonesoaps.com/uploads/1/3/0/6/130604594/bivemebumaji.pdf
    • http://mail.theindustryshop.com/uploads/1/3/0/6/130604494/4365284.pdf
    • http://mx.josephrealdesign.com/uploads/1/3/0/7/130738637/4643be3e2a55.pdf
    • http://marijuanamarketingexperts.com/uploads/1/3/0/6/130605089/4e5a7.pdf
    • http://charactersheet.org/uploads/1/3/0/4/130490314/pakodiburo-depojame-zedapafutuxezes.pdf
    • http://plannedgivingnews.com/uploads/1/3/0/2/130289428/wolibegif.pdf
    • http://alcovyblue.com/uploads/1/3/0/6/130639404/ebf54fda4.pdf
    • http://siobhanartandecology.com/uploads/1/3/0/2/130288761/roxikomefa.pdf
    • http://projectforereach.com/uploads/1/3/0/2/130289319/fa35557d.pdf
    • http://buy-consoles.com/uploads/1/3/0/4/130476288/5569222.pdf
    • http://scottschablow.com/uploads/1/3/0/4/130435570/sajapafilazuletagu.pdf
    • http://propertyexcellencemoree.com/uploads/1/3/0/2/130273735/jifokumawuvilu-sisazategef.pdf
    • http://fiercetruth.net/uploads/1/3/0/6/130605505/5624310.pdf
    • http://www.streetwisenz.co.nz/uploads/1/3/0/7/130739460/nebewetejilatuz.pdf
    • http://axewoodwork.com/uploads/1/3/0/8/130874472/1423075.pdf
    • http://beaverutv.com/uploads/1/3/0/4/130488833/130488833.html#broiler+chicken+farming

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000433f.bin
e07ffbd025ca2037cacd2b7ff00784dda56271ae62224729389b241825d92cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x433F 8804 bytes

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