Malicious PDF — malware analysis report

Static analysis result for SHA-256 184cf826758e12f9…

MALICIOUS

PDF

43.4 KB Created: 2021-06-02 08:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2248210fcb9840be6149f0884d7f8c4c SHA-1: db9645a8b3ee2ec7187c1bd828da134cfa1a5dab SHA-256: 184cf826758e12f9447a8ebf85b4c52be442a1dfd1c11dfada0df11a7f38d744
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a clear intent to trick users into visiting these links, likely as part of a phishing or scam campaign. No scripts were extracted, but the presence of multiple malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.xyz/app/431946152/free-robux-tickets-game-hack In PDF document text
    • http://manfeld.dk/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-tiktok-accounts-with-2021-fans_GM835599320.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/simplysarc_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/minecraft-cheats-pc-2021_GM479516143.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_off00004d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D64 24924 bytes
SHA-256: 5278a50a7cd868180e22c320d5fdf7428b0c5dec36ee23d8e27df15bcb100467
font_01_sfnt_off000086ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AC 18408 bytes
SHA-256: 8bdf18589652e6e0ad85931df725c4bf5d3ecb42fd5796a07c7863a819a5d378

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