Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea20353e5517b74…

MALICIOUS

PDF

51.2 KB Authoring application: LibreOffice
MD5: 452547a00d45d5f69f77dfbd3ef5f050 SHA-1: 95399956e6e60dc5729acfc73ae784705481a509 SHA-256: 0ea20353e5517b7402d6721449d74acc419b3123c4c5e3b0ac12566c78d0cf5b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://satabidit.trk-kirovskiy.ru/uploads/2020/01/29/0e0ea83337.pdf
    • http://momentswithmadds.org/uploads/1/3/0/3/130379676/vafuginalunoz.pdf
    • http://painfuljoint.org/uploads/1/3/0/5/130590403/gubufirokelaru_pedexopumef_rizonudaf.pdf
    • http://niacurriculum.com/uploads/1/3/0/5/130544070/nugikenu_towasu_falasezolu_sozalonox.pdf
    • http://montecitoluxuryrealty.com/uploads/1/3/0/5/130551114/2fb340cd34.pdf
    • http://kisunimagi.suddenweblink.online/uploads/2020/01/27/gurivol.pdf
    • http://mobilityfamily.com/uploads/1/3/0/6/130604327/6155626.pdf
    • http://reefnine.com/uploads/1/3/0/3/130323216/4036158.pdf
    • http://saverioesara.com/uploads/1/3/0/4/130483341/1734535558e087.pdf
    • http://sosi.handselected.life/uploads/2020/01/28/54fc11.pdf
    • http://lanechnge.org/uploads/1/3/0/6/130604703/1077585.pdf
    • http://aratikreibich.com/uploads/1/3/0/4/130435978/vatewugavazepuwi.pdf
    • http://nutrition-doctor.co.uk/uploads/1/3/0/5/130542996/e3f1c408940d3.pdf
    • http://medicaladministrative.net/uploads/1/3/0/6/130604692/7512442.pdf
    • http://brollopsdekorationer.com/uploads/1/3/0/4/130476502/wimibumo_fudexoxaluvub_podumizigoxo_somoserovi.pdf
    • http://bigdataavionics.com/uploads/1/3/0/6/130604290/welejawokabuj-zuwepi-toboru.pdf
    • http://mingateachers.com/uploads/1/3/0/6/130605218/raxen_kenorebotet.pdf
    • http://bezobusi.warriors-arena.ru/uploads/2020/01/29/5f8c4d.pdf
    • http://dakotaashleymarie.com/uploads/1/3/0/6/130604335/2577004.pdf
    • http://jivanoxafe.takprosto.club/uploads/2020/01/28/nipifapifibuweri.pdf
    • http://velocitytraining.org/uploads/1/3/0/4/130477201/5559151.pdf
    • http://budexad.ruonkolog.ru/uploads/2020/01/29/644214.pdf
    • http://myapotheka.com/uploads/1/3/0/5/130539338/tekitoj.pdf
    • http://misfotografie.de/uploads/1/3/0/4/130488228/130488228.html#monthly+household+budget+template+free+uk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000116a.bin
2e970525c4e26296d5e9e4c08d14db698e7e21c2d6bb02d4e6959361d551ae5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116A 8164 bytes

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