Malicious PDF — malware analysis report

Static analysis result for SHA-256 766e45af04ed661c…

MALICIOUS

PDF

57.4 KB Created: 2021-05-18 03:57:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3dc51e60c989d5f1d7d6a31546cb8bb0 SHA-1: a1bd6d2bf626f6c3b6a079c71c63b61902299901 SHA-256: 766e45af04ed661cbabf543ab61b886935724f1ed93b69f82e64e320c0b06f9a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering game hacks and free currency, indicating a phishing or scam lure. The heuristic firings confirm the presence of malicious redirector links and a general lure for game-related cheats. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7962

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-facebook-page-game-hack In PDF document text
    • http://oddgraphic.com/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://oddgraphic.com/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://oddgraphic.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://oddgraphic.com/images/free-game-pack-with-google-play-coin-master_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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C29 30540 bytes
SHA-256: 375d0043da267aa9ecc702f3941c6bebead68d8f325407061faaa7a5ba5be434
font_01_sfnt_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF9 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000af1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF1F 18480 bytes
SHA-256: c2031f29028d316a525723dce25d37222f39d47c7f71c2e87d16e38bd1d84d97
font_04_sfnt_off0000d1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B8 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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