Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b72fa35ff5d75e6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 07:45:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a0505e660e55c096f0cc62c0e0c3ce4b SHA-1: 30e6021fcd1710534c95075d7ddbd0786d5a687b SHA-256: 7b72fa35ff5d75e6529a56b38d01889f375fcfa99032c5791424b3a2b6255485
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and currency generators. The primary lure appears to be a 'free generator / game hack' for Coin Master. The document's structure and embedded links strongly suggest it is designed to trick users into visiting malicious sites, likely to download further malware or engage in scams. No scripts were extracted, but the PDF's nature points to exploitation for client execution.

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/ac-market-coin-master-hack-game-hack In PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-using-edit-this-cookie_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/trrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-robux-hack-apk-no-human-verification_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-and-tix-without-hacking_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/roblox-free-builders-club-generator_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-make-hack-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://bwsrubber.com/image/data/files/how-to-get-free-robux-without-offers_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
font_00_sfnt_off0000322d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322D 22872 bytes
SHA-256: b15430657eebff13f7c66106e0b4d63a24ebc969d9177004cd2600b1708e58c5
font_01_sfnt_off00006563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6563 18004 bytes
SHA-256: 51c403ccbf2095c129d261ca0667a18c16ab70be1117906c570f2d9d1feb2da9

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