Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eeb1586bb557a84…

MALICIOUS

PDF

42.6 KB Created: 2021-05-12 20:33:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a738c8133fe88f12872d393f6862b9c9 SHA-1: f42ae2cb0a70f0871b0592acf7d427b3712c16e4 SHA-256: 0eeb1586bb557a84d942efb7cf64b9b23050448641b56d82e8d496a2e546811d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, including one for a 'minecraft hack download'. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the lure of game hacks suggest a social engineering tactic to drive users to malicious sites, likely for malware distribution or phishing. No scripts were extracted, limiting the analysis of the exact payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 https://netcdn.xyz/app/479516143/minecraft-hack-download-game-hack In PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/mc-update_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/how-do-you-hack-roblox_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_003_off00004cb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB9 24392 bytes
SHA-256: 3524aa3641773ada0d548309439cac5f20b7a194cff0eb94c877bac6813979c2
font_01_sfnt_off000083dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 18460 bytes
SHA-256: 1986b917a50867421859734d90e96ce19f33df6ec3e97c13366e475f22860bb7

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