Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1767aa67211ed5…

MALICIOUS

PDF

44.0 KB Created: 2021-05-17 05:08:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1af9660e9136c3adb424a4e920bd337c SHA-1: cc7d00019b34d41732830e26fd5663332526de06 SHA-256: ff1767aa67211ed5f555521b0a2256256902bb24ef51f4d9a56add5d3b20a4be
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a primary redirector URL associated with game hacks and free spins, indicating a lure for users interested in such topics. The heuristic firings confirm the presence of malicious redirector infrastructure and a game hack lure. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-20-free-spins-link-2021-game-hack In PDF document text
    • http://precitool.ch/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://precitool.ch/images/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://precitool.ch/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/simplysarc_GM479516143.pdfIn PDF document text
    • http://precitool.ch/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/gold-card-coin-master-free_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_off00004795.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4795 24476 bytes
SHA-256: 7e4864545600fb20daef085b290a3a5752e15d39cf7551b67149ca7ee048cbfb
font_01_sfnt_off00007f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1D 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000088ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CE 18456 bytes
SHA-256: 35e9eef518be4f04511f9d5e633727e818c13db9b20db0c4aee16f9ae872e854

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