Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fd64523c988327…

MALICIOUS

PDF

39.6 KB Authoring application: Scribus First seen: 2020-09-24
MD5: 6f129c8ba916903c5c82951c3e2123cb SHA-1: 7272bbca1b494bfc05bb53a39268ce9c54ff56c2 SHA-256: 52fd64523c9883275c972e16050427f8182c8e5775355108d425cf61bc048c52
192 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded external links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates the presence of instructions for executing Windows command-line tools, suggesting an attempt to run further payloads. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://btbrv.com/uploads/1/3/0/6/130604014/xifodobatamapagopa.pdf In PDF document text
    • http://www.enochian.studio/uploads/1/3/0/7/130738710/7f1c19.pdfIn PDF document text
    • http://spccmd.com/uploads/1/3/0/5/130590059/riwaxukumude.pdfIn PDF document text
    • http://apkroad.com/uploads/1/3/0/7/130739401/jinipazolex.pdfIn PDF document text
    • http://lotuscoaching4kids.com/uploads/1/3/0/7/130739625/5816415.pdfIn macro / runtime command snippet
    • http://abdelbassitsenhadji.com/uploads/1/3/0/4/130490643/sidifabuveti.pdfIn PDF document text
    • http://guzoartstudio.com/uploads/1/3/0/5/130551696/9899094.pdfIn PDF document text
    • http://vegasjunkmovers.com/uploads/1/3/0/7/130775651/negol.pdfIn PDF document text
    • http://commandlineidiot.com/uploads/1/3/0/6/130621751/5513039.pdfIn PDF document text
    • http://vtflowergardener.com/uploads/1/3/0/2/130273962/6cbf8f0a4.pdfIn PDF document text
    • http://cofse.net/uploads/1/3/0/7/130776120/timozedusigutebalole.pdfIn PDF document text
    • http://newmiltoneagles.org.uk/uploads/1/3/0/6/130603807/dexidizisazolavotin.pdfIn PDF document text
    • http://www.aivets2018.eu/uploads/1/3/0/3/130313649/8986265.pdfIn PDF document text
    • http://applesandbooks.com/uploads/1/3/0/7/130738790/kazezigikigatiroba.pdfIn PDF document text
    • http://alternative-vaping.com/uploads/1/3/0/7/130776478/nuvamiforur.pdfIn PDF document text
    • http://dallasboom.com/uploads/1/3/0/7/130738755/1595b7.pdfIn PDF document text
    • http://leoinspired.com/uploads/1/3/0/5/130551898/1860505.pdfIn PDF document text
    • http://mty.news/uploads/1/3/0/6/130605017/3106851.pdfIn PDF document text
    • http://greenvillemaid.com/uploads/1/3/0/6/130604940/sudixikozizidu.pdfIn PDF document text
    • http://www.unrpad.org/uploads/1/3/0/6/130603698/kodiwipasamupew.pdfIn PDF document text
    • http://betterworld.co.nz/uploads/1/3/0/3/130313144/gubobit.pdfIn PDF document text
    • http://4wys0r.bdgct.com/uploads/1/3/0/4/130488248/130488248.html#petrifilm+aerobic+countIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2423 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off00003b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B11 7736 bytes
SHA-256: 705dcef89fdd672228680c99d93844494a5b7594e35fe61b4fa86de77595d90e

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