Malicious PDF — malware analysis report

Static analysis result for SHA-256 853f3b5e2ef83e8d…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 21:32:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b04c35627cb6dcdd637eb45713d8403b SHA-1: 30f137edb2884ce7d538a8aa046ee4c9e942fc6f SHA-256: 853f3b5e2ef83e8dbc0dc61c521058a2edb554c87c8ffd98d61fee93596563c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with 'game hack' and 'generator' themes. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-hack-pc-2021-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly indicate 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.tw/app/406889139/coin-master-hack-pc-2021-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/naruto-rpg-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/demon-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-jailbreak-roblox-dinero-infinito_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-accounts-november-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/claim-free-robux-no-human-verification-1-billion_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-bandana-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-hack-apk-android_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/ww-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-do-i-get-robux_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_off00002ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECB 21972 bytes
SHA-256: b58f43baaae30e14f27c0d13a4686655e7e506240b0ffa3e1c890d3cc9e1d358
font_01_sfnt_off00005f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F64 18560 bytes
SHA-256: eeb023a91ba39b5fa554a6c784e72bf16b3eaf0df26123cf10d120866bb40872

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