Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5a308b205baeea…

MALICIOUS

PDF

44.1 KB Authoring application: GIMP
MD5: c470f3bd8ccb5628b3d96a97c8e35ffc SHA-1: 69dd66f04094861056d416535346bf9552d9a4c5 SHA-256: 5f5a308b205baeea533aac0b42f33f21cc45110aad32f00c173635ae00edfd72
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files on different domains. This suggests a tactic to manipulate search engine results or distribute further malicious content. While no scripts were explicitly extracted, the nature of the embedded links and the ML classifier's high confidence indicate a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 http://menusie.com/uploads/1/3/0/3/130323322/8976494.pdf
    • http://danicagoward.com/uploads/1/3/0/7/130738973/2147077.pdf
    • http://kraftyhairkreationstudio.com/uploads/1/3/0/2/130288514/be84bedb7b9aa.pdf
    • http://www.susiecaron.com/uploads/1/3/0/2/130291712/xosupigiw-mosurefugemepe-vixenapozubivu.pdf
    • http://harodim.org/uploads/1/3/0/6/130621055/mubavog_devozodu_rugisewir_lutozuwe.pdf
    • http://micahmakespots.com/uploads/1/3/0/3/130379075/judasegigisoluz.pdf
    • http://richlandrealestateblog.net/uploads/1/3/0/6/130640218/ae70bb72.pdf
    • http://www.pesach.com.au/uploads/1/3/0/7/130775892/tetazilefa_mukaxugetazojo_raweveleb_zokomimulivo.pdf
    • http://meattaffy.net/uploads/1/3/0/2/130289532/ad02fbc581.pdf
    • http://www.topendtour.com.au/uploads/1/3/0/5/130540397/tijezu_sarodekawudiret_romaledeburo.pdf
    • http://handyladyj.com/uploads/1/3/0/6/130621233/4995926.pdf
    • http://ensolate.org/uploads/1/3/0/2/130288439/vopikejad.pdf
    • http://larybc.org/uploads/1/3/0/5/130551247/vunis_tasaxixusuboma.pdf
    • http://dracoshairco.com/uploads/1/3/0/2/130289695/4761772.pdf
    • http://rodiermail.com/uploads/1/3/0/5/130588589/91252b0.pdf
    • http://mariageronimo.com/uploads/1/3/0/7/130738537/9731596.pdf
    • http://interactivegamessales.com/uploads/1/3/0/2/130287229/tuvuzowotep.pdf
    • http://rwbickfordconstruction.com/uploads/1/3/0/8/130873741/f8972910ffe.pdf
    • http://slotcasinoreviews.com/uploads/1/3/0/6/130603969/wofatuloda_zojos_purevixipalada.pdf
    • http://dxva.com/uploads/1/3/0/6/130640223/1cd1c.pdf
    • http://latolaw.com/uploads/1/3/0/2/130287932/7539799.pdf
    • http://a1395559xstreamtravel.xsideas.com/uploads/1/3/0/2/130271117/130271117.html#fatores+de+risco+para+o+cancer+do+colo+do+utero
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030af.bin
e71b5d070518d53f54fc46d5ab5e1597292fa70f800633ef076270e45e31d22f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30AF 16072 bytes
font_01_sfnt_off0000489b.bin
2b2b6a6de18a2227b29bac1ef37fa2a144825ee2b301f684a33fff0aece519e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x489B 10644 bytes

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