Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc850968cf498094…

MALICIOUS

PDF

41.7 KB Authoring application: Adobe PDF Library 9.0
MD5: 02112ad836df7893ba27aef517a4a8a9 SHA-1: cb97be513f0a4e915cf2ebaa0d0c9443324fc7ed SHA-256: cc850968cf498094739e4c5fe90b5a8b606a971134d5153e9d4415d2d0237f4a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique commonly used for SEO-based phishing or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text is heavily corrupted and does not provide further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://myungjinkevinjoe.com/uploads/1/3/0/6/130639477/39eb7.pdf
    • http://mywelby.org/uploads/1/3/0/6/130620391/60dcbbd2e.pdf
    • http://mrsmauck.com/uploads/1/3/0/2/130270867/nazedejizizo.pdf
    • http://www.coppercatkin.com/uploads/1/3/0/2/130289274/fimebirajigida.pdf
    • http://facebookbailbonds.com/uploads/1/3/0/5/130540402/6704140.pdf
    • http://how-to-tie-a-tie.video/uploads/1/3/0/5/130588548/mojadufipe_jolorekelikitu.pdf
    • http://riverdalecommunitycenter.com/uploads/1/3/0/6/130605159/jivosafapaso.pdf
    • http://tomlavery.com/uploads/1/3/0/2/130288565/1512636.pdf
    • http://www.rivalconstructionservices.com/uploads/1/3/0/6/130621850/8893545.pdf
    • http://ds4you.tech/uploads/1/3/0/6/130620420/5392506.pdf
    • http://vav.tokyo/uploads/1/3/0/8/130813786/jonizibe.pdf
    • http://wealthtacos.com/uploads/1/3/0/2/130288410/2925351.pdf
    • http://laspadaitalia.com/uploads/1/3/0/6/130621502/25184.pdf
    • http://www.seekuncertainty.com/uploads/1/3/0/6/130639231/bejomaf.pdf
    • http://www.mmastrorilliciv.com/uploads/1/3/0/5/130541221/wagasadip_zudamixosorake_ravodobin.pdf
    • http://mindfulsouthcarolina.com/uploads/1/3/0/2/130272333/mubipatigezijuxab.pdf
    • http://www.boda120499.com/uploads/1/3/0/4/130476045/lazisobanuze-bewavesusoteno-xatizekoxuk-danabisokudi.pdf
    • http://dprservices513.com/uploads/1/3/0/4/130490006/nazuga-mademulodun-nitomikutu.pdf
    • http://roaming-root.com/uploads/1/3/0/5/130546237/73028.pdf
    • http://jacobsphotographyco.com/uploads/1/3/0/7/130775698/8875878.pdf
    • http://bevaraweb.com/uploads/1/3/0/5/130589317/vopavimudu.pdf
    • http://nmcda-nm.org/uploads/1/3/0/7/130775797/roxifomil.pdf
    • http://www.timbertracehomeinspections.com/uploads/1/3/0/5/130542948/fc484e2b8d4966.pdf
    • http://gmgroundworks.co.nz/uploads/1/3/0/4/130476684/finiwu.pdf
    • http://splendordiamonds.co.uk/uploads/1/3/0/7/130775675/tufani.pdf
    • http://www.mayahairstonpoetry.com/uploads/1/3/0/2/130272963/130272963.html#25+irregular+verbs+in+present+past+and+past+participle

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000347e.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x347E 2652 bytes
font_01_sfnt_off00004021.bin
445e337801198ea03ad12bb2f21f70e824777ce02b2f4f6e1536fe5852cc3f6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4021 7332 bytes

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