Malicious PDF — malware analysis report

Static analysis result for SHA-256 be6b85d8f3eb6db0…

MALICIOUS

PDF

44.8 KB Created: 2021-05-15 09:02:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e0d9a6b23d47d529110b94b56fc66d87 SHA-1: 8a671729e6e7da2a62d630a315010df575d0b367 SHA-256: be6b85d8f3eb6db02daa2ee315412a625780c12d71e43f5981e9ab440d5c5deb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and free resources. The heuristic firings confirm these links lead to known malicious redirectors and a general lure for downloads. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-link-haktuts-game-hack In PDF document text
    • https://www.smartitbg.com/images/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/roblox-demon_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-spins-coin-master-hack_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_003_off00004bbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BBF 28416 bytes
SHA-256: 3de58c850abdc8aa2b749e031ae39e4ba7b712e5138ad42f3976ca3925d04977
font_01_sfnt_off00008c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C94 18372 bytes
SHA-256: d0160522c9507928c114f36e82183f3878c9bb5f52b4c502e96d0270f56f9c5a

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