Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c937060912e94aa…

MALICIOUS

PDF

47.4 KB Authoring application: Smallpdf Desktop
MD5: e2b5c84c0e70e555864c2058128e0a77 SHA-1: 281a35928e5e4fc925c91e0372314400a84f8185 SHA-256: 7c937060912e94aa4fd0d34b9dfc7c369be384da30f2a16506bde249e6a46aad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flag this as malicious phishing content. The embedded URLs likely lead to the download of a second-stage payload.

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 http://myrole.tech/uploads/1/3/0/4/130435872/gebogewuzopibujukoj.pdf
    • http://masterrepairplumbing.org/uploads/1/3/0/3/130324152/wexuvagotavomok.pdf
    • http://mx.owlhavenfarm.com/uploads/1/3/0/2/130289238/fesuxupoliginime.pdf
    • http://morjana.net/uploads/1/3/0/5/130551775/bexopafu.pdf
    • http://myreflectionjournel.com/uploads/1/3/0/8/130874633/kixivezow-sititivewa.pdf
    • http://driftroot.com/uploads/1/3/0/6/130639476/zefevanogidot.pdf
    • http://mindvibelife.com/uploads/1/3/0/5/130543472/58505582efb2b32.pdf
    • http://webdisk.beechwoodproductions.ca/uploads/1/3/0/7/130776300/22b76695.pdf
    • http://myronwolmandesigns.com/uploads/1/3/0/3/130323159/7200509.pdf
    • http://nelsonmassage.com/uploads/1/3/0/5/130539090/waxokan.pdf
    • http://theintuitivepath.org/uploads/1/3/0/7/130740110/3364938.pdf
    • http://unitedcraftgrowers.com/uploads/1/3/0/3/130313063/woxabetabakimi_tuganoru_zesukolugiwavu_bupixirerokotej.pdf
    • http://coachchrismahan.net/uploads/1/3/0/7/130739510/95a2a21f42.pdf
    • http://555consulting.com/uploads/1/3/0/5/130550949/lutemazizaguv.pdf
    • http://bigbsbarandgrill.com/uploads/1/3/0/5/130540405/1167018.pdf
    • http://mindcraftcoach.com/uploads/1/3/0/7/130776539/lonizuxeni.pdf
    • http://ministrycoordinator.net/uploads/1/3/0/4/130489398/lixufido.pdf
    • http://cartiercouturee.com/uploads/1/3/0/4/130488415/gewusevepefes_bolapinadobavi_warizepaboju_dikev.pdf
    • http://mhtdbtest4739.com/uploads/1/3/0/5/130551423/04b3b7ced1cb04.pdf
    • http://webmail.t2troubleshooting.com/uploads/1/3/0/2/130288757/130288757.html#famous+rock+guitar+riffs+and+solos

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a06.bin
78aec78dae8b0ad30a2add6261c22656d11dfd89f1432a0274abb33ae2751fc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A06 8408 bytes

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