Malicious PDF — malware analysis report

Static analysis result for SHA-256 a02b3d816d4d55e4…

MALICIOUS

PDF

34.3 KB Authoring application: Poppler-utils
MD5: b6bc8e967ff716d126f89facd800f773 SHA-1: 14221acb21bae94d447695656af15fefca8a5524 SHA-256: a02b3d816d4d55e4276783295c2820c761eacd6da68d4df1940fe90d35d70148
150 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 ML classifier and ClamAV detection strongly suggest malicious intent, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely used to redirect users to malicious sites, potentially for phishing or malware distribution.

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://tiripexagi.masterpechi.ru/uploads/2020/01/27/zipefigujukalu-xofapevor-kedamox-dolin.pdf
    • http://jibat.novostroyki-barnaul.ru/uploads/2020/01/28/2870bb310.pdf
    • https://pemufokag.weebly.com/uploads/1/3/0/4/130488983/93bb9b4bbf5d.pdf
    • http://frmclinicsrussia.ru/uploads/2020/01/28/wosoxog-losar.pdf
    • http://wedineko.kinodreamg.icu/uploads/2020/01/28/879847.pdf
    • http://materialystroitelnye.ru/uploads/2020/01/27/5711480.pdf
    • http://elitetalentgroup.org/uploads/1/3/0/5/130550768/sososo_vezarebunamuwuk_nemeba.pdf
    • https://daxapixon.weebly.com/uploads/1/3/0/6/130604354/736927.pdf
    • https://mararinexogu.weebly.com/uploads/1/3/0/2/130287299/46548100a23fd.pdf
    • http://mymantramint.com/uploads/1/3/0/3/130313075/gaterodabu.pdf
    • http://perrygardnercoaching.com/uploads/1/3/0/3/130313265/6476773.pdf
    • http://podarysam.ru/uploads/2020/01/27/monifixanu_pizif_nopes.pdf
    • https://xuwelovewavopiw.weebly.com/uploads/1/3/0/2/130272071/juwid-girok-jixuruzak.pdf
    • http://leindl-design.com/uploads/1/3/0/4/130483422/rarofawexu.pdf
    • http://lexexujul.rkmw.ru/uploads/2020/01/29/dd146ca7f1d5e4b.pdf
    • http://kumija.storeforevery.com/uploads/2020/01/28/nenutewuzu.pdf
    • http://jintai.ru/uploads/2020/01/29/6ad3540b1fb4.pdf
    • https://jumomidex.weebly.com/uploads/1/3/0/5/130543052/c155c29.pdf
    • http://eaglespridervspacecoast.com/uploads/1/3/0/5/130551772/mofobimidut-virogiwanejosi-zejalexuxoxod-jobajet.pdf
    • https://bunirajoxo.weebly.com/uploads/1/3/0/4/130488847/e9b896c0.pdf
    • http://welcome-to-uruguay.com/uploads/1/3/0/2/130270936/vugalosozemun.pdf
    • http://fipubek.master-v.ru/uploads/2020/01/28/aa6c58682f.pdf
    • http://annotalegal.com/uploads/1/3/0/5/130550949/130550949.html#nattamai+tamil+movie+teacher+bgm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016bf.bin
0b51d0f0e5078faa605bfc9fcc0b02bc60b14b7963bb8da00289bacdf90174f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16BF 8772 bytes

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