Malicious PDF — malware analysis report

Static analysis result for SHA-256 82aae1cfadc66b03…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 03:57:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0cf10e5a8f569496b551735da2b7b8b0 SHA-1: 79e02e708374d153a571942150b88d92a60aa986 SHA-256: 82aae1cfadc66b031389558d52b02616490676fb4bb8fdae947d49faa369b91a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains and pages promising free in-game currency and hacks, such as 'microsoft-bing-free-robux-game-hack'. These links are flagged as malicious and part of a known redirector infrastructure. The document body, though heavily obfuscated, contains references to these lures, indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/microsoft-bing-free-robux-game-hack In PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://infopromotransvision.com/ckfinder/userfiles/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://www.roblox.coIn 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_004_off00005140.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5140 26432 bytes
SHA-256: 454cd7791a9f91ef4a7de66a189a69ad2fdcbfa51bfdf46b4794b22925321c8b
font_01_sfnt_off00008e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E47 18720 bytes
SHA-256: f6da71d3ec7876d1f2450260025b1db4712d77c7886386833aafb50cc2347919

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