Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e49da8cc84375e0…

MALICIOUS

PDF

33.6 KB Created: 2021-06-19 04:03:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fa4ffbd7666befbdb3546c7aad5bcbc1 SHA-1: 6bc0cca98a405687cb3fd9199f5871ba9d1ee161 SHA-256: 4e49da8cc84375e037965e83d42c0c94b3c209e8776666d308560a42cabd605d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to a known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The document body and embedded URLs strongly suggest a lure to download potentially unwanted or malicious software. The ML classifier also flagged this PDF as malicious with high confidence.

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/hacker-roblox-2021-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-go-free-in-app-purchases_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cb-ro-hacks-skin_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-app_GM406889139.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_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 21876 bytes
SHA-256: a4fdb3200a59d1f3b155111c5c92e1ac9b7187e25046af06bce62dde6fc80dd6
font_01_sfnt_off00005dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCD 19056 bytes
SHA-256: 83c994634b96c12ef315de0b8331508c6083e1c4dd5a0f0a60bdbbe56c39621c

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