Malicious PDF — malware analysis report

Static analysis result for SHA-256 899c89478a02a453…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 10:01:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 270b53aa82643bbcad4f552f151edd7d SHA-1: feb4f31bd0150b9b861d32e7b4de34fc2a2e924d SHA-256: 899c89478a02a45302183bea4ada73bf74d028609461a51fc75ca8b3ba40a23a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, leading to a lure for game hacks and free spins. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt.

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/406889139/coin-master-free-spin-daily-bonus-game-hack In PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/project-alpha-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/pubg-uc-cheap-price_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/infinite-money-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/infinite-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-card-collection-in-coin-master_GM406889139.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_off0000303a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303A 22460 bytes
SHA-256: a627174f39d6f50fd10fbcbffa51c7838ce1042c313b987280a08473382c0492
font_01_sfnt_off00006217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 18952 bytes
SHA-256: d2ed054167ad71656c3df730ba14e02d9bf1f8c44d8566bad403600bb829d9f1

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