Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c066c135d10db2e…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 21:30:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7314471429372eec87fb4ebdad23ed5e SHA-1: f27c69a9de4a99bbfb60c61c9f4c08be427c6495 SHA-256: 3c066c135d10db2ead76c77ce893a324bef77e04434ce70c574cd59e262e1712
82 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks and rewards, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures suggests a phishing or scam attempt. No scripts were extracted, but the primary attack vector is the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.tw/app/431946152/rewards-roblox-game-hack PDF link annotation
    • http://opac.salatiga.go.id/slims7//repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-yin-vs-yang-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-grouo_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/bingo-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-supreme-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hacks-para-roblox-descargar-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/guuuddinfo-roblox-online-hack-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-diamonds-in-roblox-royale-high-school_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-trick-deutsch_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EF 22944 bytes
SHA-256: e435d7bb89806ba4107497a371244ca02783bee9476e95f82a57e02a7f453469
font_01_sfnt_off000064f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 18824 bytes
SHA-256: 930d589a3fa2d10146747634a187f22f648975cc01566e9bd93cefcf36c06127

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