Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac18a0d38adc530…

MALICIOUS

PDF

34.2 KB Created: 2021-06-21 06:44:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5467a7b9703004effac6d95fb669e63a SHA-1: b80c2e234946070bda3679a9ebffb3f0e124604b SHA-256: 8ac18a0d38adc530a3fe91928c817e359ffb60c32f0f0ced67fd58cee42dd0de
200 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free items, impersonating brands like Facebook to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/free-pants-roblox-wiki-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to lead users to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/free-pants-roblox-wiki-game-hack.
  • 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/free-pants-roblox-wiki-game-hack In PDF document text
    • http://subarulegacy.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/how-to-hack-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/free-group-funds-roblox_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/pokmon-go-free-download-apk_GM1094591345.pdfIn PDF document text
    • http://subarulegacy.com/images/how-are-roblox-cheaters-cheating_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/free-robux-with-no-verification_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
font_00_sfnt_off00002f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F22 21904 bytes
SHA-256: 5be47eef88850929d736d127179d0a5024112159615d8a5ba67ff6d74225219f
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 19396 bytes
SHA-256: b526b6448fcf29e572eff9ae913ac83a9ca69634655070e4f10ff98968d4de27

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