Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ab21e338a2d865…

MALICIOUS

PDF

36.6 KB Authoring application: LibreOffice
MD5: eda3b8333605dfe137f6c00f155b8d1d SHA-1: 0670b2b62469fea1a754546515ede4eaa24dd3d5 SHA-256: d0ab21e338a2d865e1370bb090b9f51762c9b5b3a5a1dadb9bdaa445a4702a6b
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier with high confidence. Static analysis revealed it functions as a link farm, containing numerous embedded URLs pointing to external PDF files. The primary heuristic indicates a mass external PDF link farm, with the dominant host being seedlingsystems.co. This suggests the document's purpose is to redirect users to potentially malicious content hosted on these external sites.

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://seedlingsystems.co/uploads/1/3/0/3/130324278/vasonu_kerades_melimovuzoneva.pdf
    • http://nava.sendfrs.com/uploads/2020/01/28/8456215.pdf
    • http://supubuf.ugra-transfer.com/uploads/2020/01/27/wonatevaxuxalofiri.pdf
    • https://meluwefewu.weebly.com/uploads/1/3/0/3/130323103/b8c5b2d.pdf
    • http://cns-news.com/uploads/2020/01/27/nifopino-pixazalomogeb.pdf
    • http://zizad.bizsphere.ru/uploads/2020/01/28/eb74e5.pdf
    • http://professionalpretty.com/uploads/1/3/0/5/130540725/depupenodo.pdf
    • http://danitakay.com/uploads/1/3/0/5/130542894/3031102.pdf
    • https://tegenuvokokekem.weebly.com/uploads/1/3/0/2/130292013/e9f2810d85e3f.pdf
    • http://lemi.galaxytools.ru/uploads/2020/01/27/4323748.pdf
    • http://momumefaj.info-black-latte.ru/uploads/2020/01/27/dawen.pdf
    • http://feldenkraisontour.com/uploads/1/3/0/3/130313249/4065617.pdf
    • https://fowolesiror.weebly.com/uploads/1/3/0/6/130605156/9a1fa6.pdf
    • http://rikopijili.pets-and-co.ru/uploads/2020/01/27/rujir.pdf
    • http://tetiwatuj.sonxequyentri.com/uploads/2020/01/29/xifure_kizasuminit_kimupexesenex.pdf
    • https://bulonabek.weebly.com/uploads/1/3/0/5/130540585/pemowabomumuf_zuzuxiwofe_zigulor.pdf
    • http://pekam.virus-gepatita.net/uploads/2020/01/27/541c52d816291.pdf
    • http://market-voice.ru/uploads/2020/01/29/5527e182266ab.pdf
    • http://easternmedia.ca/uploads/1/3/0/4/130436172/7de180bc9f34953.pdf
    • http://adoptme.info/uploads/1/3/0/2/130271121/130271121.html#helping+verbs+practice+2+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015a8.bin
2eea6ddca466005088a47617dbeaa66071f97e3c37b1320001c20f464b9032eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A8 8620 bytes

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