Malicious PDF — malware analysis report

Static analysis result for SHA-256 814deba0125d0b74…

MALICIOUS

PDF

41.6 KB Created: 2021-05-12 07:00:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 209d9bd36898a6966d8347481e0003c0 SHA-1: 289ce4c2db7f58ce797a6ccbe58878220cc53f41 SHA-256: 814deba0125d0b74184478880606bf49336f51ffd073f6b18f859498b3aac6c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'game hack generator'. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious workflow. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-version-game-hack In PDF document text
    • https://www.acacss.com/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/easy-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/claim-robux_GM431946152.pdfIn PDF document text
    • https://www.acacss.com/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://www.acacss.com/images/free-robux-no-human-verification-generator_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004986.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4986 24480 bytes
SHA-256: b0fbc5941b08637c7ec57dc8c85574fa72d851c1f4f02f530f6fdc9c62fc190b
font_01_sfnt_off0000818f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818F 17848 bytes
SHA-256: 2729ad92b050e6dc35a280ba208d99b8f0446e6618424513f217a7b9cdaff54a

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