Malicious PDF — malware analysis report

Static analysis result for SHA-256 77d14b551b660551…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 15:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 16b29a63a99a43775987e23e919aed0d SHA-1: dff0ee67608685dfc55bf905889c5e987de3389b SHA-256: 77d14b551b6605518f86dab484d0733a6a832a9f98b271d56275d1f6076d7254
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to malicious redirectors and game hack lures, indicating a social engineering attack. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites, likely for further malware delivery or credential harvesting. The ML classifier strongly supports the malicious nature of this PDF.

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-tricks-and-hacks-game-hack In PDF document text
    • http://nitetpl3.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nitetpl3.com/images/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://nitetpl3.com/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://nitetpl3.com/images/coin-master-hacks-for-free-spins_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_off000049fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FB 24144 bytes
SHA-256: f9c1573e9903cfa70a45c02029162946f467fc1d9dd1e4cd6299381b1fa9ed7f
font_01_sfnt_off0000810d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810D 2932 bytes
SHA-256: 7aee9e503a5ce204a8a322bb3f7914cecf17d3f4dda4772d0d3ff378ba95a3d6
font_02_sfnt_off00008b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B35 17888 bytes
SHA-256: 6b40f6b54227a57bca670b7ddbf89328ee1638c3cadd4e2aadbe35f25d791a64

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