Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f07b3686f84f05…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 20:08:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f2b6bd19d90d72c9bd569336e3d9df3c SHA-1: 8b91ff0cea92684f689a0a167d74cb51625dc11a SHA-256: a8f07b3686f84f053eb4f2d164b1da4841a8b1902f9e2db3facfa477731ca10a
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 free currency. The heuristic firings indicate that these links are known malicious redirectors and are part of a game hack lure. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious website, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-hacks-game-hack In PDF document text
    • http://eleveurs-autrement.fr/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://eleveurs-autrement.fr/images/coin-master-hack-download_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B53 28908 bytes
SHA-256: 4adfa72e51db88a213acf03256a2812e860b02b1c0bccb02e2c3400a026c6925
font_01_sfnt_off00008b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4E 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off0000954b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x954B 17740 bytes
SHA-256: 0307ae1fdf286ae380d36e270ef5c992f348f7a5470d5d5ce449782a5f21d577

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