Malicious PDF — malware analysis report

Static analysis result for SHA-256 2093fb478dcf923e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 03:30:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 069e16db4b900a4f936ea4d1e1617e4b SHA-1: 3d67c9f61864fad98f8916a4ae634fea911891b3 SHA-256: 2093fb478dcf923e8d2886a837a51e0b40c6064305d86107ed7451b11c8b0b96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically targeting users with lures for game hacks and free spins. The primary malicious URL, http://netcdn.tw/app/406889139/coin-master-daily-free-spins-link-game-hack, is repeatedly referenced in the document body and flagged by heuristics. The document's content and structure strongly suggest a phishing or scam attempt designed to lead users to malicious infrastructure.

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/coin-master-daily-free-spins-link-game-hack In PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/hot-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/roblox-hacks-no-down-load_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/reaper-quest-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/free-roblox-music-sound-ids_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/roblox-catalog-hacks_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/free-roblox-griups_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/free-robux-no-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/redeem-code-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/be-my-baby-break-free-mashup-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/roblox-credit-card-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/free-robux-deutsch_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/roblox-robux-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mtsn3bulukumba.sch.id/__statics/gudangsoal/files/hack-roblox-wall-hack_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_off000032a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A5 22688 bytes
SHA-256: c635d92157d430dbeba9bdeecdc815a29cdfbeb06797cf5e0d9f0981d44574c2
font_01_sfnt_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 18768 bytes
SHA-256: 989ac8744b1238afa99b88b7bb3fb2df9d299a986309a52cf516f5921eb03fc0

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