Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6749ffaecfc53f…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 16:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: acce2f23d352593f5710d5089d56524b SHA-1: 6cf37eefd345a23da892c62bebcb5b57d90b4b03 SHA-256: 0c6749ffaecfc53f8579a9ea1fe989bcaf5279b63fc05780f8bfffbea9f3e68b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and generators. The primary malicious URL identified is http://netcdn.tw/app/479516143/optifine-pe-game-hack, which is presented as a lure for game cheats. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/optifine-pe-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-no-surveys-no-human-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-roblox-for-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-999m-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/babe-free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/which-are-the-best-free-level-7-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-manquin-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hacked-roblox-account-for-sale_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/firestone-training-map-free-model-leaked-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-does-roblox-get-hacked_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/real-coin-master-hack_GM406889139.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_off00003061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3061 22760 bytes
SHA-256: 9120fa05755929f7686acc5eb09ab2d5bd69f1976d864584b24f170bc5dafb3e
font_01_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 18188 bytes
SHA-256: 106e92ccf0483d7e3d6814cb7b7d47902da7918aaf1cd4cd7bc423ce2a0c5fa3

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