Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d08f40ba41a1c1d…

MALICIOUS

PDF

60.0 KB Authoring application: GIMP
MD5: 55023bef10639c9610111fc4fc34353e SHA-1: 0e166c3d01c752fcfee7e6aa603fabc92ab9cf5e SHA-256: 5d08f40ba41a1c1d780e90596b66b28a97a9739ad255682a4b2848ac9c3ca8b7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further indicate malicious intent. The document body, despite being heavily obfuscated, contains URLs that are likely part of this link farm, suggesting the primary goal is to drive traffic to these external resources.

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 https://vexuguluviwopo.weebly.com/uploads/1/3/0/6/130605472/figibi.pdf
    • http://vsoldatov.ru/uploads/2020/01/28/jugele-lamib-konuvaxotijiw.pdf
    • http://dimi.pnptogo.com/uploads/2020/01/28/cf1402d223c.pdf
    • http://bado.business-idea.info/uploads/2020/01/29/b01c9f2.pdf
    • http://sixelage.xeuns.ru/uploads/2020/01/28/188160.pdf
    • https://kumuguxaset.weebly.com/uploads/1/3/0/4/130490078/8688779.pdf
    • https://zoxenasirazixup.weebly.com/uploads/1/3/0/2/130274368/daperinuru.pdf
    • http://roommax.online/uploads/2020/01/27/saginetenixuto.pdf
    • http://puranoti.quitayponbebe.com/uploads/2020/01/28/zafotibekugewug_fojide_xekobolep_sixox.pdf
    • https://vexuguluviwopo.weebly.com/uploads/1/3/0/6/130605472/lajivate-kogibimiwete-mebupigex-xosobe.pdf
    • http://piluragu.jasonbarun.com/uploads/2020/01/27/zezoko_sutimazonoxa_vejolokumoduluw_gufuloriwumo.pdf
    • http://vojidolis.my-smile.top/uploads/2020/01/27/gibedak_roxesud.pdf
    • https://tefazubek.weebly.com/uploads/1/3/0/5/130551229/wusomu_gajesomi_zipij_tanavalut.pdf
    • http://provape.ru/uploads/2020/01/29/nenajap-berofolegezumo-xafez-puvuxepa.pdf
    • http://toranug.boda-hilda-avelino.com/uploads/2020/01/27/d0d07486.pdf
    • http://drlucyholmes.com/uploads/1/3/0/4/130489367/1509829.pdf
    • https://pazisomesujuxiz.weebly.com/uploads/1/3/0/2/130271017/f5f838711d11ee.pdf
    • https://wajixurikilafoz.weebly.com/uploads/1/3/0/2/130273944/vinarufesenida.pdf
    • http://oakclass.com/uploads/1/3/0/3/130379549/130379549.html#flute+breathing+exercises+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001616.bin
42a251c0193a3ce1d2d4ee582852212cc2941932440074587be1bd380942070d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1616 9800 bytes

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