Malicious PDF — malware analysis report

Static analysis result for SHA-256 022f5251cd82764e…

MALICIOUS

PDF

46.4 KB Created: 2021-06-03 13:32:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2913254f716b7b0f28da6f6a7cc1d422 SHA-1: e133f5520093b2182fe96cbc4c165b9c032e8a6f SHA-256: 022f5251cd82764e1b28a4f0826c95e53326e089a51b09daed69b7888dade258
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a malicious domain, masquerading as a "free generator / game hack". The heuristic firings indicate that this is a known malicious redirector and a lure for game-related cheats. Although no scripts were extracted, the presence of malicious links and the lure suggest the document is designed to lead the user to a potentially harmful site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.online/app/406889139/free-spins-coin-master-game-hack In PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/cheat-engine-roblox-no-cooldown_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004feb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FEB 24196 bytes
SHA-256: 6ff35d66d25257b70531514fff666bce9645782b702b67fac3d2f32e75db5c63
font_01_sfnt_off0000870d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870D 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off00009393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9393 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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