Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c4e3ed522b7450…

MALICIOUS

PDF

34.0 KB Created: 2021-06-29 03:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f395af16fcf766474b9a352249d224be SHA-1: 6be98b7911a0c23a50720e928df1c8609bcac3e7 SHA-256: 22c4e3ed522b7450b15d5c5a4f452b2e1aea7a23c82ba83140abbb5843cc19ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically targeting users interested in game hacks and cheats. The document body and heuristic firings confirm the intent to lure users to these malicious sites, which likely host further malicious content or phishing pages. No scripts were extracted, but the high number of malicious links and the ML classifier output indicate a high likelihood of malicious intent.

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/roblox-hack-teleport-and-wool-and-speed-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-hack-no-fake_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-noob_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-accounts-2021-biz_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-shinobi-life-free-spins_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-dragon-ball-z-rage-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-can-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-hugs-roblox-id-decal_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/cheats-roblox-mine-simulator-julio-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-minecraft-for-infinite-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hacker-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-gift-card-free_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_off00002e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E74 22056 bytes
SHA-256: a12e0efe7424d2eaa3c4666616b678ea0777a0948a7c2a0a874f4411b812f7d6
font_01_sfnt_off00005eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB6 19308 bytes
SHA-256: 29921a430cf14c897b1e4bbd2ca2a43cec512e9796251ba1e24ab2f2a385689d

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