Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c914efef4e891c…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 09:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5da003e8e6351df17627baed142333a SHA-1: da5d757a91fcd9721213231ad749730883867883 SHA-256: 58c914efef4e891cdd004fca6d35a8dcc9cfe468ea1aeeff50cf961029f3ad60
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The document body and extracted URLs suggest a social engineering lure to trick users into visiting a malicious site. While no scripts were explicitly extracted, the nature of the PDF and its embedded links strongly indicate a phishing or redirection 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.tw/app/406889139/is-coin-master-free-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/tiktok-free-fans-2021_GM835599320.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/script-hack-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-do-you-get-hacking-station-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-com-accounts_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-free-robux-game_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/best-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-card-code-generator_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/pokemon-go-free-coins-no-survey_GM1094591345.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/list-of-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-offensive-hacks_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B0 23172 bytes
SHA-256: 6f9f7266b3fdcd0a66536219d79ad45636b809f5b26c06ae38882116afbad7f0
font_01_sfnt_off000066f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 17996 bytes
SHA-256: 51c7c1181202281cc4ee9307e7b94c29137a8eb38afeb9429a7c3d80b7fecf33

Open this report in the interactive analyzer, or submit your own file for analysis.