Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d8693500638db8…

MALICIOUS

PDF

44.7 KB Created: 2021-05-13 04:09:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 93530faa2e7b8ef75d6235e3ad1aecd8 SHA-1: 7cf956d200353c64dd724fbe331367d50a0f3b9a SHA-256: 47d8693500638db8d243fe63ba3aa1dd730c6ae39de471568e1a42d36c765097
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising "game hacks" and "free spins" for popular games. The primary lure URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-game-hack, is flagged as malicious. The document body, though heavily obfuscated, contains similar lure text and additional URLs pointing to potentially malicious content. The ML classifier also strongly indicated maliciousness.

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-free-spins-and-coins-game-hack In PDF document text
    • http://infoagronomia.com.ar/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://infoagronomia.com.ar/images/coin-master-free-coins-2021_GM406889139.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_off00004a12.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A12 24796 bytes
SHA-256: 1178957ea5fa09c912401f60f7a61706d7927438e4783bffe37fa25cbeec8c36
font_01_sfnt_off00008312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8312 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC4 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

Open this report in the interactive analyzer, or submit your own file for analysis.