Malicious PDF — malware analysis report

Static analysis result for SHA-256 735e470d7b527d14…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 12:45:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1cdab44cd2915cd2d66bfee45751caf3 SHA-1: 0c60ab14e61a5f3a0ef293ed953e99a04bc2d539 SHA-256: 735e470d7b527d14c19850e40007e6666e61e359d4576a2b967f18ea5b11f0c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The document body and embedded URLs reinforce this lure, pointing to the same malicious domain. This indicates a phishing attempt designed to trick users into visiting a malicious site, likely to download further malware or engage in other malicious activities.

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-jackpot-madness-hack-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/https-www-roblox-com-games-2021202156-free-bux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/pubg-uc-generator_GM1330123889.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-gift-card-redeem-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-cheat_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_off00003328.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3328 22908 bytes
SHA-256: 141ce1069b06fe067d66d0c34f2c408b92c4f4ef19db8da6278196ee9d184dde
font_01_sfnt_off00006677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6677 18520 bytes
SHA-256: e89fa5ec929b8535a397edffe5ad2130546f02901cf85d0b843382a2d23970af

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