Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb4725ec25677c06…

MALICIOUS

PDF

65.2 KB Authoring application: Mobipocket Creator First seen: 2021-05-26
MD5: 4f2f9378aab245b0e6bbd59aece01e41 SHA-1: cbc3d087fa419ca31653e5dc3634e5cf7162c81f SHA-256: eb4725ec25677c064623f52af05e345f1287e58c3a345db099f97d64580aaad2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, suggesting a phishing or SEO spam campaign. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and ML classification further support malicious intent. The embedded URLs are likely used to redirect users to malicious sites or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://webizuz.kuhni-msc09.icu/uploads/2020/01/28/nagifugateni_gitesobaj.pdf In PDF document text
    • https://dexudojobovif.weebly.com/uploads/1/3/0/4/130483770/gexejetavikewamutag.pdfIn PDF document text
    • https://dasojukavaneruj.weebly.com/uploads/1/3/0/3/130313803/xiwenukezawufetesine.pdfIn PDF document text
    • https://xobexebu.weebly.com/uploads/1/3/0/4/130475901/xevotedunupo-wutabavotivopax-mirusiba-tutudusinogop.pdfIn PDF document text
    • http://sotatodev.3ndfl-nalogi.ru/uploads/2020/01/28/pabuxireguni-romibobumitebe-logetede.pdfIn PDF document text
    • http://gas.help-vk.ru/uploads/2020/01/27/2d547902108006c.pdfIn PDF document text
    • http://kaz.metin27d.com/uploads/2020/01/28/8580373.pdfIn PDF document text
    • https://vavajeritetobo.weebly.com/uploads/1/3/0/5/130588710/pazadonejotogaxotaj.pdfIn PDF document text
    • https://sedowozoxu.weebly.com/uploads/1/3/0/5/130551962/niperugorugivugiwu.pdfIn PDF document text
    • http://supersfereon.fun/uploads/2020/01/28/4095445.pdfIn PDF document text
    • https://wabusefo.weebly.com/uploads/1/3/0/2/130287940/xojole_lupise.pdfIn PDF document text
    • http://nazojiw.tandifac.tech/uploads/2020/01/27/zepote.pdfIn PDF document text
    • https://nivobigud.weebly.com/uploads/1/3/0/5/130544448/zotadepalikubol.pdfIn PDF document text
    • http://party.su/uploads/2020/01/28/4231137.pdfIn PDF document text
    • http://kugidewogi.avukatbeyiniz.com/uploads/2020/01/27/753065ac8e.pdfIn PDF document text
    • http://baw.begone-dumps.store/uploads/2020/01/27/7f90e.pdfIn PDF document text
    • https://zutetosedulofu.weebly.com/uploads/1/3/0/6/130604615/pedafag.pdfIn PDF document text
    • https://lonogolaw.weebly.com/uploads/1/3/0/5/130539992/1167477.pdfIn PDF document text
    • https://jipesidepuzuna.weebly.com/uploads/1/3/0/5/130590351/130590351.html#horizontal+axis+wind+turbine+designIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000161e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161E 8368 bytes
SHA-256: 6b92c03a368701c1c83b90ab39af5f5d026515b740d323cb801520eff8a88911
font_01_sfnt_off0000aecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECF 16100 bytes
SHA-256: 6c59ccafd8fcbdc2f76f8a9f3666501205a27004750c5b001ebeb7648760750d
font_02_sfnt_off0000c356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC356 3112 bytes
SHA-256: dc32507154ae6e52ba6e5cc81ca489d5abddc761c7f08b71030117ac666682bb

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