Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf569fd67db7cf0…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 20:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 667317412370d9bffe8e2bc7749b9a67 SHA-1: 69da15d882bf91474517999e554b8760122d53a5 SHA-256: abf569fd67db7cf093f583d1f3633686dcc1c9534adc32d0a10f15775fdef2e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically designed to lure users into downloading potentially unwanted or malicious files under the guise of game hacks or generators. The document body and heuristic firings indicate a clear intent to trick users into visiting these malicious URLs, which likely serve as a gateway to further malware delivery or phishing attempts. No scripts were extracted, but the embedded URLs and redirector heuristics strongly suggest a social engineering attack.

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/hack-coin-master-free-spins-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-cards-no-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-mod-menu-free-download_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-hack-top_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/tiktok-free-6-months_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/aimbot-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/1million-free-badges-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/aimbot-hack-for-roblox-cbro_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-unlimited-money-i-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-robux-earnrobuxzone_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-god-yourself-in-roblox-not-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/memez-hack-roblox_GM431946152.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_off000030ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30FF 23152 bytes
SHA-256: 0662a696b4955812768fc3e13541e1cfdd0ba969263e28fe8399894116062ed6
font_01_sfnt_off0000655d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655D 18344 bytes
SHA-256: b719b9ed07640e3019d175b5875a3ac233088e4e0000cfcd6dccfc2cfac1c44f

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