Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d116682a63f225…

MALICIOUS

PDF

35.7 KB Created: 2021-06-26 10:59:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3338b577f51daf66bcceded0a2772414 SHA-1: 11555518384576973191236bda188577f448270e SHA-256: d5d116682a63f225d83e77879d6a7d67ba4bef325b3bd8e4ef22e2b033b6a427
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, likely to trick users into downloading further malware or visiting a phishing site. The document body and heuristics indicate a lure related to game hacks and free currency, a common social engineering tactic. No scripts were extracted, but the presence of malicious redirector links and the ML classifier output strongly suggest a malicious intent.

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/robux-hacks-computer-game-hack In PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/codes-free-robux-on-bloxland-youtube_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/cheat-codes-for-roblox-prison-life-20_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-ban-proof-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-free-wiki-item_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-on-xbox-free_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-computer-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/super-nice-mml-hack-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-hack-points-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/comment-hacker-roblox-mad-city-en-frencai_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/free-server-side-explit-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-counter-blox-hack-download_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/slurp-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man3kotapadang.sch.id/__statics/gudangsoal/files/roblox-free-robux-mkd-apk_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_off0000343f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343F 22412 bytes
SHA-256: ab10a716dfdddb2f26241a4955913fdbf3cd67867db996268f828d6684cc02d7
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 19260 bytes
SHA-256: 24cd9240c0d6d2cd91a65a14ff71ef3c16f263820017772b6ebabaecc53eac33

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