Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa842b9f3b07dc1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 18:00:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 88a291c1f6e2529cac4db75d76145bd8 SHA-1: c25c30cc87ae360d6154866c50834785d679ce50 SHA-256: 1fa842b9f3b07dc11734f9cb3a75f1ac7ed792fd02f6a199adf0deee2a18268c
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on deceptive content related to game hacks. The document's structure and embedded URLs suggest an attempt to exploit user interest in free in-game items to redirect them to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure indicate a phishing or social engineering 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/how-to-hack-coin-master-game-hack In PDF document text
    • http://library.atim.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/games-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/answer-questions-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-roblox-yolasite_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/pokemon-brick-bronze-roblox-hack-phone_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-and-builders-club-without-hacking_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/vortexx-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-robux-game-uncopylocked_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/phantom-forces-roblox-hack-money_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/tiktok-free-watermark_GM835599320.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-god-mode-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-parkour-level-300-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-xyz-apk-download_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_off000030be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30BE 22892 bytes
SHA-256: 3a2cdf799a078ecbcbd82550e28e40532efd2a9f644756c0fe0403e283ce0f27
font_01_sfnt_off0000643b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643B 18168 bytes
SHA-256: 2bd458773159c42ddb973016f08b2d4d6bea9039625adade8827a8f393a5a95a

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