Malicious PDF — malware analysis report

Static analysis result for SHA-256 08cf2c126d763523…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 02:29:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ba4ba88e3950382200ab43af02405c22 SHA-1: 593ba5f8b533481b3e637e8db8ba3ba8b110ee1a SHA-256: 08cf2c126d763523c4ca2ea2ada3c12e04a6f073eb373a70815e48661618f6cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure is the URL http://netcdn.tw/app/406889139/free-coins-on-coin-master-generator-game-hack, which is associated with known malicious redirectors. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting these sites. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or scamming attempt.

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/free-coins-on-coin-master-generator-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-glitch-obby_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/multiple-roblox-download-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F76 22632 bytes
SHA-256: 9b2dacd3718c908f8c598c76727b9e3cd867e51ff8467940a160b74f53413b34
font_01_sfnt_off000061e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E2 17996 bytes
SHA-256: 652bfc4429efe625da62e4032e3ff2009d9c60449c75ce9dfd4d98481dbe128e

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