Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ececccfcb427e4…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 13:45:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 533ef63bb89d4cda7dabefa701ed89db SHA-1: eb0f5bca79443d62ef3dd7913eee0a9525062352 SHA-256: b2ececccfcb427e4316d63c586a1bf430dc46cc359ebfb089a9b1fb097c0f140
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to malicious redirectors, specifically designed to lure users with game-related cheats and hacks. The primary lure is for 'Coin Master' and 'Roblox', directing users to URLs that are flagged as malicious. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at tricking users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/how-to-get-free-coins-on-coin-master-hack-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hacker-items-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/difference-between-hacking-and-exploiting-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-and-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-ad-on-youtube_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cheats-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-money-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-roblox-game-passes-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-no-hack-no-waiting_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-play-now-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-heaven-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-money-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-script-executor-roblox-2021-no-virus-free_GM431946152.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_off000030e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30E7 22880 bytes
SHA-256: 84082d56e04739c8b551a25089b74fb258c1136712e460e63723691582d88d56
font_01_sfnt_off00006443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6443 18332 bytes
SHA-256: 5b878530e69a12175dbf01b0ca128da18827fe0c1663de911774679428d069c4

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