Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af3b4f996f7b8c2…

MALICIOUS

PDF

36.1 KB Created: 2021-05-21 23:33:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4700a77e54f265d7d1ae7c11f4360400 SHA-1: 01fbbded8fc0167bfd5fc56f855a1a728ee90583 SHA-256: 8af3b4f996f7b8c23ac51401c2f994d664161244ad8da6f1871f95cd5fa6fa80
208 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure of 'free generators' and 'game hacks' to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure that impersonates brands like Apple, aiming to harvest user credentials. While no scripts were directly extracted, the PDF structure and embedded links strongly indicate a phishing and credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/best-free-minecraft-servers-game-hack.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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 https://netcdn.xyz/app/479516143/best-free-minecraft-servers-game-hack In PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://elearning.mtsnlingga.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://youtuIn 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
stream_002_off000033cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CC 25180 bytes
SHA-256: 8ac0e67be038f13f8205d11fffef20811d88b9fe675856d1151a00c59c8723cf
font_01_sfnt_off00006d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D25 17896 bytes
SHA-256: c529f757d6b4a4f9c7840ecb5b6035c813da3045ee3b560268268dab20db1aa9

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