Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d79a97273557ff…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 21:03:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d5558f58bd4439a1d061cc99f85d6141 SHA-1: 83cc7faa36a458ea891d4999f96eb2c32cdc8a4d SHA-256: 97d79a97273557ff758a4ef9f0fbda262db88381ca3525059d067c001a8427fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-animatronic-world-hack-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious redirector links and the overall lure suggest a phishing attack.

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/roblox-animatronic-world-hack-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-strucid-hit-box-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-pants-black-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/best-free-railway-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-free-no-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/redeem-free-robux-code_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_off00003015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3015 22252 bytes
SHA-256: 861fc0682684992d0237bb1ad0db80908292e04cf924150a3994e0ec03b27ddc
font_01_sfnt_off000061ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AE 19512 bytes
SHA-256: 1b16c81886ab9c1242ace57c09ecb7482d07f30a141c8a9978953c719fff6db4

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