Malicious PDF — malware analysis report

Static analysis result for SHA-256 0963296446abfda1…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 10:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 319e8b84b0012c7c5562b30ce58cb3b2 SHA-1: 0d96b19eb9b45a41f984f04b23cf2591184f42a1 SHA-256: 0963296446abfda1dd7d6c74e7b0431c085ce30ed83f19126bd6e0632f025f8c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a 'game hack' lure. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/406889139/coin-master-free-coins-today-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-hack-inspect-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/han-hackeado-mi-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/link-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/my-roblox-game-was-hacked_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-the-free-pop-corn-hat-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-the-plaza-money-cheat_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-hack-coin-master-facebook_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
stream_002_off000033e0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E0 22908 bytes
SHA-256: 7027e11373fdab322110afc9c89cd853e5868e9a127e36409739416e469bbb4c
font_01_sfnt_off00006755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6755 18352 bytes
SHA-256: 4436e71a69cc84908d54640a01fc878fc6589f186e334144e7e9ae00d8ddcef6

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