Malicious PDF — malware analysis report

Static analysis result for SHA-256 622d44914098042b…

MALICIOUS

PDF

47.6 KB Created: 2021-05-19 07:44:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: eb014965b7c7ebe5a948f65e98fbbecc SHA-1: 7adeadea257d38cc5bcfd5354596c49eac2e4146 SHA-256: 622d44914098042b941244029d3e4a0b3c62ec5305c84413f649e32903e57983
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free generators' to lure victims. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/479516143/minecraft-pe-hack-client-ios-game-hack In PDF document text
    • http://pourvosvacances.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://pourvosvacances.com/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://pourvosvacances.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pourvosvacances.com/images/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://youtuIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004df5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DF5 28836 bytes
SHA-256: 45af2e8a9b1aa84f510e53bf9f94f42df6dadd95063efd22c5cf2dffd0833755
stream_005_off00009895.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9895 18108 bytes
SHA-256: e50e7ffc92e693739b6a1d5d28be47030cd8670fbb45c47044b0ac4b43b5d3d6
font_01_sfnt_off00008e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E22 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028

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