Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac6611fe575e1335…

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 18:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0698a1edbd18f428c22e1ae544a22c9c SHA-1: bd6eab19629ddfb7eb7aa5f0ed302fe36bc28e6e SHA-256: ac6611fe575e1335ee39b96548bc128d1bfeccfebf1a76f33f69aa7998e8bc05
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/431946152/hacking-system-for-clothes-on-roblox-game-hack. These links are presented as lures for game hacks and free generators, indicating a social engineering attempt to trick users into downloading potentially harmful files. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/hacking-system-for-clothes-on-roblox-game-hack In PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-hack-marshmello-head_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-can-i-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/hacker-png-roblox_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/robux-hack-911-pastbin_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-brocken-bones-4-cheats_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-apk-free-robux_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox-with-proof_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/launcher-roblox-hack-dll_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-no-human-verification-jeuxvideocom_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/boostgamesnet-roblox-free_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-free-robuxapl_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-roblox-promo-codes-september-2021_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-outrageous-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-heroes-online-hack-script_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-hack-week-2021_GM431946152.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_off00003410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3410 22352 bytes
SHA-256: 7445874c99d966c54ed996861f622a5668514674b4097706a40b2997ccb410be
font_01_sfnt_off000065bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BC 19464 bytes
SHA-256: fac18327234aea9755593627c9ffbd41bacedbe9833578d147e5e108993dd2d3

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