Malicious PDF — malware analysis report

Static analysis result for SHA-256 80154ccdc1f30125…

MALICIOUS

PDF

44.7 KB Created: 2021-05-12 00:58:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5a5b1e442b839f632154f482b4b06390 SHA-1: 66c27d5e3b077ef7b408246d7322408bceec0bf9 SHA-256: 80154ccdc1f3012558679dd09994fa3fe9a0e4cf0bd8becc8ed944c366571c28
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "generators" to lure users. The primary link redirects to `https://netcdn.xyz/app/406889139/coin-master-hack-ios-reddit-game-hack`, which is flagged as malicious infrastructure. The document body, though heavily obfuscated, also contains numerous URLs pointing to similar lure content, suggesting a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/coin-master-hack-ios-reddit-game-hack In PDF document text
    • http://professionalpilottraining.com.au/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/20210-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-can-i-get-free-robux_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_003_off00004a50.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A50 24860 bytes
SHA-256: 64d69eaf8f5bb6d1bce78b15a7c45528cfe562c7ff9ef79c749b6787abf4d4d6
font_01_sfnt_off0000834c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834C 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D66 17888 bytes
SHA-256: f6db0d5ce37e689a46ceb71450432421ac9d8148bbd676fee9db03c905ab63a7

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