Malicious PDF — malware analysis report

Static analysis result for SHA-256 88126a7d2ae33d2f…

MALICIOUS

PDF

52.0 KB Authoring application: PDF Studio
MD5: a615d1dd2ab61654a9294205574772d5 SHA-1: 025d71695d1209d8953a570d258790cd897b8ec7 SHA-256: 88126a7d2ae33d2f17d1abf5b80a4be20f9f0a9b0fe758bc22e930366da4d226
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also strongly flagged this file as malicious. No scripts were extracted from this sample.

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://positivepushkc.com/uploads/1/3/0/2/130289311/a5d2935c.pdf
    • http://bladescommerciallawncare.com/uploads/1/3/0/3/130379226/xigalov.pdf
    • http://allenlnc.com/uploads/1/3/0/6/130621465/zibenos.pdf
    • http://purebarretexasstrong.com/uploads/1/3/0/7/130740232/688232f5199602.pdf
    • http://lewisfamilyadventure.com/uploads/1/3/0/6/130620746/fifuxeremuvunuvin.pdf
    • http://cabitdesign.com/uploads/1/3/0/5/130588551/sojuxov-pubaj-ruvakovikagemo-femipofarixuwo.pdf
    • http://www.algorithmclothing.com/uploads/1/3/0/7/130776486/tegururutepoxaj.pdf
    • http://www.myeneeproject.com/uploads/1/3/0/5/130540493/lupoxed.pdf
    • http://wbmcradio.com/uploads/1/3/0/3/130379058/biwamuxuza.pdf
    • http://charlesnicholswi.com/uploads/1/3/0/5/130589122/ef8dca1bafa.pdf
    • http://mail.desktopdelight.online/uploads/1/3/0/5/130543868/rowibofuparew.pdf
    • http://montebellonotarypublic.com/uploads/1/3/0/3/130324357/8218706.pdf
    • http://hatchreno.com/uploads/1/3/0/3/130323806/putugatusi.pdf
    • http://mta-sts.mail.coworkinginbristol.com/uploads/1/3/0/4/130483578/xovubitakomusepodera.pdf
    • http://luckylucianorottweilers.com/uploads/1/3/0/5/130589125/731447d724.pdf
    • http://soterianow.com/uploads/1/3/0/7/130775106/4483307.pdf
    • http://skoutsecurity.us/uploads/1/3/0/8/130874380/tivakezolivanetite.pdf
    • http://bgraceart.com/uploads/1/3/0/5/130547924/razipaxikef-dinevojaku-tuponakod.pdf
    • http://kylaconner.com/uploads/1/3/0/8/130814874/ce7f2ac.pdf
    • http://cbdusadistributors.com/uploads/1/3/0/5/130539092/gobuwoduliduzetekasa.pdf
    • http://midwestpark75.com/uploads/1/3/0/2/130289688/2455464.pdf
    • http://oldwoostore.devsite-1.com/uploads/1/3/0/6/130621293/130621293.html#atlantic+charter+importance

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000104c.bin
f825f12e1975e6f0a598d20b4be89e644288ac3f683d5815d8b0abee16e1011f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C 8760 bytes

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