Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7842530f2919fa…

MALICIOUS

PDF

37.1 KB Created: 2021-07-06 08:38:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e4c5bb386d36dd5ed18d9ff5df2718fd SHA-1: c60149ae0a3f11e5cd1fa38a9dcf74ca23cd0aeb SHA-256: 1e7842530f2919fa7ca9141cdcb25c8c79aa5d4e8436fd388304513cad85b066
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The ML classifier strongly flagged this PDF as malicious. The embedded links likely serve to download further malicious content or redirect to phishing sites.

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/working-coin-master-hack-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-dungeon-quest-no-skill-coulddown-script-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-no-free-box_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-free-robux-2021-mobile_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/email-scammer-claiming-to-be-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-no-verification-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-today-daily-links_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_off000037c9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37C9 23992 bytes
SHA-256: 05e4e6e0db89a4d5d757e2222c68866fd0facb0d181d1bd5218a286ae6866474
font_01_sfnt_off00006e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E90 18204 bytes
SHA-256: 2f3fc4cea7c667aba6bd4fbad35a90c469a811863d2ececabae30f54f8a6c622

Open this report in the interactive analyzer, or submit your own file for analysis.