Malicious PDF — malware analysis report

Static analysis result for SHA-256 734701378fd4140a…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 12:02:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 305125872aefd68612fa0bbf78453720 SHA-1: ab72346e761f634518b91fdbaa373d82a65cca8b SHA-256: 734701378fd4140a550a5a7a34c4020c1303e8210f8b4f7df3c52ca48a5b7a95
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/coin-master-daily-spin-free-game-hack PDF link annotation
    • http://muslib.unmus.ac.id//repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-admin-commands-in-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-counter-blox-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-hackorg_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-hair-id_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
stream_002_off00002fa6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FA6 22912 bytes
SHA-256: 81835068cb0295e42d2e4e8c34a4a3cfa8a99fdb64dcbde5651c12df0c1a5bfd
font_01_sfnt_off000062e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E5 18596 bytes
SHA-256: 4bd887bddad3707660fa4e91161c1a16423faf42318738ff8904c415139aa447

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