Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c74d177e6c4e584…

MALICIOUS

PDF

28.7 KB Created: 2021-07-04 02:27:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6e5f2f1adf53a37d969dffa752fe18cd SHA-1: 519efa792df089044538d142ff83594d5c16519e SHA-256: 4c74d177e6c4e584290402ccc79751d4df2f84903e8d41a4331b0645566e3239
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users into clicking on what appears to be a 'game hack' or 'free generator'. The document body and extracted URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious redirector links and the overall lure indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/hack-coin-master-app-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pokemon-go-no-free-box_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-shirt-templates-2021-christmas_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-punch-animation-roblox-r6_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-twisted-murderer-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-clothes-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-the-free-dragon-wings-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-official-fan-page_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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003382.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3382 22664 bytes
SHA-256: a270fb3093c64359220c44a6ccd600ad833731f29c3cb3f24db7f555d35dc4d2

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