Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa24c94b4c997d8f…

MALICIOUS

PDF

51.8 KB Authoring application: QPDF First seen: 2021-05-26
MD5: 67e6791f48d82dbab06bec0bd6e9ccbf SHA-1: 84af90db5b1529b5e6cbf82017afe5999f952e54 SHA-256: aa24c94b4c997d8fab9c7845de6755263dee3fe5adcea5859ef0f734fb3abfbb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malware. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and ML classifiers also flagged it as malicious. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • 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://newyorkhomeclick.com/uploads/1/3/0/5/130588435/9a61c32d5f6039.pdf In PDF document text
    • http://alphamalestyle.weebly.com/uploads/1/3/0/6/130621909/8693466.pdfIn PDF document text
    • http://ecpn.su/uploads/2020/01/27/78fcc8eb07bc46.pdfIn PDF document text
    • http://shopcenter17.fun/uploads/2020/01/28/viwiba.pdfIn PDF document text
    • https://nerekizebefapid.weebly.com/uploads/1/3/0/5/130539108/2d43b7887bb4cdc.pdfIn PDF document text
    • http://lidodrycleaner.com/uploads/1/3/0/5/130589278/c70090d5d7.pdfIn PDF document text
    • http://cancercoloring.com/uploads/1/3/0/2/130272233/dda43e0043b4.pdfIn PDF document text
    • http://mindfulnesslab.centre4innovation.org/uploads/1/3/0/2/130287401/mipemikozulawi-xivew-dosepemu.pdfIn PDF document text
    • http://xalafapa.update-accounts.net/uploads/2020/01/28/suboze_dadakisi_lafizupatixunow.pdfIn PDF document text
    • https://dujitoru.weebly.com/uploads/1/3/0/6/130604179/2909846.pdfIn PDF document text
    • http://jibupeza.lorkabinet.ru/uploads/2020/01/27/tatibapafoxiwum_befejogisefel_geroraruxog_kawovax.pdfIn PDF document text
    • https://lidevopa.weebly.com/uploads/1/3/0/5/130550961/1295684.pdfIn PDF document text
    • http://redbudpromotions.net/uploads/1/3/0/6/130620877/47c102c.pdfIn PDF document text
    • http://vojefana.onlyoil.ru/uploads/2020/01/27/pekujomadutebemaz.pdfIn PDF document text
    • https://wulelixinogep.weebly.com/uploads/1/3/0/2/130291724/c285ae.pdfIn PDF document text
    • https://dowewipolulofod.weebly.com/uploads/1/3/0/4/130435597/936600133dd0.pdfIn PDF document text
    • http://weluckyfew.com/uploads/1/3/0/2/130272851/37207205b9.pdfIn PDF document text
    • http://lsumnerb.com/uploads/1/3/0/3/130313024/xilawogitesu.pdfIn PDF document text
    • http://dmtrade.eu/uploads/1/3/0/5/130543107/dapijosunabarifuxix.pdfIn PDF document text
    • http://scoutx.us/uploads/1/3/0/5/130550708/felavu.pdfIn PDF document text
    • http://contact.dng.ie/uploads/1/3/0/6/130639369/9655771.pdfIn PDF document text
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/2/130272925/130272925.html#fractions+worksheets+with+answers+for+7th+gradeIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000168f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x168F 8388 bytes
SHA-256: 68e9c723ddac12fa17a4976782bccebd19c2d4dd3bc1a547ca0b98c9a731d2c7
font_01_sfnt_off00007a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A36 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_02_sfnt_off00008307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8307 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

Open this report in the interactive analyzer, or submit your own file for analysis.