Malicious PDF — malware analysis report

Static analysis result for SHA-256 778865778e1fdaa2…

MALICIOUS

PDF

35.9 KB Authoring application: Nitro PDF
MD5: 4fc5a82ab44d80690e4e713ed183e1f1 SHA-1: 8ca4b28e5ca725be342aaace82abb5b7d17657f9 SHA-256: 778865778e1fdaa295fa9a08b0c05230993c66b1b0cf6ca277a2e3a7b51dea48
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, with ClamAV specifically identifying it as 'Pdf.Phishing.TtraffRobotInstall'. The document body contains garbled text but also mentions 'Nitro PDF' and a benign URL, likely a lure. The primary attack pattern involves directing users to a network of external PDF files.

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://thenepeanrowers.com/uploads/1/3/0/2/130271137/denaguxavago.pdf
    • http://www.allfiredupceramics.net/uploads/1/3/0/7/130775853/zuterikipib-funakorik.pdf
    • http://tuffnlitehockey.com/uploads/1/3/0/4/130490643/7315768.pdf
    • http://natureinnny.org/uploads/1/3/0/3/130312923/4891347.pdf
    • http://mallsecurity.net/uploads/1/3/0/6/130605393/tokogevafenavemosid.pdf
    • http://www.prisonblogmedia.com/uploads/1/3/0/4/130483184/vakul_tajepo_mefofo_lusenaranajuveb.pdf
    • http://mictkinofest.com/uploads/1/3/0/6/130620551/d60c77399e222f.pdf
    • http://thryvor.com/uploads/1/3/0/6/130640059/6306297.pdf
    • http://junkbond-losses.com/uploads/1/3/0/2/130289809/113ac78abea4163.pdf
    • http://bestkettlecornever.com/uploads/1/3/0/7/130775702/65a78c32c.pdf
    • http://anthonybeastmode.com/uploads/1/3/0/5/130543588/9512198.pdf
    • http://nicolesnaturals.blog/uploads/1/3/0/3/130324451/4678082.pdf
    • http://missioncapitaladvisorsinc.com/uploads/1/3/0/7/130740210/96f3a859f025.pdf
    • http://miguelvaldiviezo.com/uploads/1/3/0/8/130873853/xanikijatakod.pdf
    • http://jacksieckhaus.com/uploads/1/3/0/5/130551805/vijogikalunufo.pdf
    • http://cassyagredano.com/uploads/1/3/0/5/130539657/gikigevebosusepabuw.pdf
    • http://www.pvbeekeeper.com/uploads/1/3/0/8/130874099/pekuzutitup_libobakejot_rapudosozobotad_vabolebipok.pdf
    • http://tamarindoacupuncture.com/uploads/1/3/0/2/130289369/9796024.pdf
    • http://whistleblowerrecovery.com/uploads/1/3/0/3/130379611/594915.pdf
    • http://primatransfersandmore.com/uploads/1/3/0/6/130604446/pevubadupusarir.pdf
    • http://ajointvisionllc.com/uploads/1/3/0/6/130621523/3234538.pdf
    • http://326mountainroad.com/uploads/1/3/0/6/130604349/tusapalebep.pdf
    • http://wagenselleryoga.com/uploads/1/3/0/4/130435905/130435905.html#how+do+i+edit+pdf+for+free
    • https://www.sejda.com/pdf-editor

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002bca.bin
b1e3d52a9ee3c7a714a32b807a5340bf2c3ac2eef23229a711bc5ed058a2457f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCA 7512 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.