Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50e54d571b7e1d2…

MALICIOUS

PDF

33.9 KB Created: 2021-06-28 05:22:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 47fa72cd7fba015ae7f70cbccedc2dce SHA-1: c927e3bd3d2c1b9ed8fac6c65a7ce9c42d1e0fb5 SHA-256: b50e54d571b7e1d2305ef841cd60d45c1a19ec079069e3904556a16ad0e4a04b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector, specifically designed to lure users with promises of free game-related items. The document body and heuristics indicate a phishing or scam attempt, likely to deliver further malware or steal credentials. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing campaign.

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.co/app/431946152/gimme-free-robux-game-hack In PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/battle-royale-roblox-hack_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/robux-money_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/download-dimond-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/hacking-roblox-accounts-passwords_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_off00002e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E11 22152 bytes
SHA-256: b91ccd9ee4d78f8d6a98e80211d047ef99a1e2accb7c692a1c91b905f3fad5d6
font_01_sfnt_off00005f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4E 19096 bytes
SHA-256: 1ade95452b5510efa705b3c431fb8cc596e36ca699b5c8061848ff7c306581ef

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