Malicious PDF — malware analysis report

Static analysis result for SHA-256 1607bab2a9b30913…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 15:49:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3ba1c72aeeed2f6d932290ca2faedf24 SHA-1: 6ad8fa0d89ac6234880a0cbbc9c6979a99d3aca1 SHA-256: 1607bab2a9b30913ad5370920d0b028bfe859fb6904fd974d4c7aa380e618ee8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to a known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures for popular games like Coin Master and Roblox. The document body and heuristic firings confirm the intent to trick users into visiting these malicious sites, likely as a lure for further exploitation or credential harvesting. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a phishing or scamming 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/free-spins-for-coin-master-without-human-verification-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-hacked-pour-avoir-des-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-no-human-verifaction-and-survey_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-apoc-rising-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pubg-uc-kaise-kamaye_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-immortal-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-into-your-account-right-now_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-cool-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/youtube-free-robux-and-obc_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-tix-lord-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-dominus-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_off000032a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A3 22624 bytes
SHA-256: 209c9599f7d494ebb6938adc6d776058897d1227beea07ef87f476d9e18744bf
font_01_sfnt_off0000652e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652E 19072 bytes
SHA-256: ab456d8fb78f7a75ac8c0c3e18ca03385b605ca6326ff6a6876da9d238efa35b

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