Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdcc040eee2d515b…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 00:09:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f065eef2b42ae8194650c68e6e9d9a9f SHA-1: 4b2d7be4a31366356fde72b51920e7262a4221e4 SHA-256: fdcc040eee2d515b000932fcdec20a2bb6f291982c1065d8283c9c7798e85ab8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains and purported game hack download pages, indicating a phishing or malware distribution attempt. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. Although no scripts were explicitly extracted, the nature of the links suggests a potential for JavaScript execution or further payload delivery upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-app-download-game-hack In PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/groups-that-give-out-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-hack-for-fly_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/hack-roblox-2021-roblux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/blacksburg-bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/does-cheat-engine-execute-scripts-into-roblox_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ea6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EA6 22484 bytes
SHA-256: 09608872472d1d35bb9e34ace8bcbb06781807733ea90cd9f32678c85e3b0b49
font_01_sfnt_off000060d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D6 18756 bytes
SHA-256: d83686db471f8f245c2f8ef1f44426007a21de0d25beaa974be47c01623e4190