Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a27b2661a3c9bf…

MALICIOUS

PDF

41.7 KB Authoring application: Smallpdf Desktop
MD5: 66a00c8fb56eb4d06fcae69de6867cbd SHA-1: 2b236b32a0482a458fef64d1bc5f02e71859b997 SHA-256: 58a27b2661a3c9bfb6f82439031300022b3232853abc9934fe38c9abe2c7b17e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body text is heavily corrupted and does not provide clear context, but the link farm strongly suggests a lure to malicious websites.

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://koppsinmalawi.com/uploads/1/3/0/3/130324011/navodomab.pdf
    • http://benjaminsmithmusic.net/uploads/1/3/0/5/130589429/wanoj.pdf
    • http://jaeggi-fotoartat.com/uploads/1/3/0/5/130550971/xorumavap-ruxunufubumejap.pdf
    • http://mitchellstreetbusinesssuites.com/uploads/1/3/0/5/130547515/nanesowif-pelitovef-vuzebegevat.pdf
    • http://winningwithservice.com/uploads/1/3/0/7/130738684/tobesedek-bigedagov-fosixebe-pagoteve.pdf
    • http://www.hello-gorgeous-lashes.com/uploads/1/3/0/2/130288722/nogarikegum-muvaremu-nududijaru-kevivivubawad.pdf
    • http://artani360.com/uploads/1/3/0/4/130488416/takolagegep.pdf
    • http://webdisk.delightedcoaching.com/uploads/1/3/0/6/130639269/491b308189fb7f.pdf
    • http://mynaturalrecovery.com/uploads/1/3/0/8/130873899/sopitozalib_falabuzabovifik_linenopid.pdf
    • http://imperfectwitch.com/uploads/1/3/0/7/130739210/2569892.pdf
    • http://www.ezmedicarehelp.com/uploads/1/3/0/6/130622023/beae7e61e7f24.pdf
    • http://abc-lyd.com/uploads/1/3/0/7/130776630/kerejotelogovuluvi.pdf
    • http://www.spudsrc.com/uploads/1/3/0/7/130739190/b651e620c279.pdf
    • http://starksatellite.com/uploads/1/3/0/2/130271131/lezebumapuno-tulopedegefexe-rurizeno-bajijum.pdf
    • http://rocklandcountynurses.com/uploads/1/3/0/8/130873917/morumoworitosiveguno.pdf
    • http://www.eventsbylora.com/uploads/1/3/0/4/130475881/6369187.pdf
    • http://bellemounfoundation.org/uploads/1/3/0/4/130436250/lufazutagonut-xutubipetosex-futal.pdf
    • http://beasleycounselingservices.com/uploads/1/3/0/7/130776114/fidixozos.pdf
    • http://www.matthewschultzmusic.com/uploads/1/3/0/8/130874046/6693980.pdf
    • http://www.homebrewerydiy.com/uploads/1/3/0/6/130640078/pezite.pdf
    • http://www.codenamehustle.com/uploads/1/3/0/4/130476320/katotomoripi.pdf
    • http://mrrotdir.com/uploads/1/3/0/4/130483402/gakevazogaromob_wupidux_digajolam.pdf
    • http://hostmaster.mullionbarn.com/uploads/1/3/0/6/130604501/989f6f00bd.pdf
    • http://zhuanjia.bpmtc.com/uploads/1/3/0/7/130775755/130775755.html#compare+alcoholic+fermentation+and+lactic+acid+fermentation

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ff7.bin
0d7bd832fa613c7ebf58c04bd9c952e8f810e1ac5ae15b58e4986ae305df5a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF7 8036 bytes

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