Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2cc61b3776912b…

MALICIOUS

PDF

33.9 KB Created: 2021-06-27 22:06:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e340f821b43dc443b709fa97641c8f95 SHA-1: aac14cd34aa28a2f6fd50935e8c5b6291f12dcdc SHA-256: 1e2cc61b3776912b1cf79195e8ebee6f56f36d926f74aafcaf39ede6c4b530dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and embedded text promoting free in-game items for popular games like Roblox and Coin Master. These links, particularly http://netcdn.co/app/431946152/how-to-get-roblox-clothes-for-free-2021-game-hack, are flagged as malicious redirectors. The document's primary purpose is to trick users into visiting these malicious sites, likely to deliver further malware or engage in phishing.

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/how-to-get-roblox-clothes-for-free-2021-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/admin-roblox-games-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/sex-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/can-you-get-hacked-by-bots-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-elite-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-get-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/are-there-any-roblox-games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblub-for-free-on-roblox-100-working-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-diamonds-on-royale-high-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-make-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-gift-card-codes-2021_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_off00002f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3D 21400 bytes
SHA-256: df324eb80fb372d79d75ab3899a5c70d472b38b4b617e7e9ef50fb565d765cd2
font_01_sfnt_off00005e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 19488 bytes
SHA-256: 700ccba20a45f153f71927f60d2105c22d970a648cc18b3b41af38493f374d9d

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