Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ce6a02c3840184…

MALICIOUS

PDF

46.3 KB Created: 2021-06-11 09:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 235e894cab69a552e722830d550dd59a SHA-1: ca45676ee0f8951eb40d9cd95669ea160375e240 SHA-256: 27ce6a02c38401842747c7d116af96aa5445336be0ece4542c99098db0aa31e5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, aiming to trick users into visiting potentially harmful websites. The document body, though partially corrupted, contains references to 'Roblox My Hero Academia Online Hacks' and a URL that aligns with the heuristic findings. The presence of embedded URLs and the nature of the lures suggest a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/roblox-my-hero-academia-online-hacks-game-hack In PDF document text
    • http://perpus.wdh.ac.id//repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-sex-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/freecoins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-remove-default-clothing-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/robux-cheat_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
stream_004_off000052c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52C1 26548 bytes
SHA-256: 6c48a35cf30afbd91ed3280551f4b39797b406e7fb5d14506babbbb187547580
font_01_sfnt_off0000901e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901E 19112 bytes
SHA-256: 045edb276f43a4ddca2f092e6e82031d9fdf146c8aa2b42c43c699e2dc33d271

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