Malicious PDF — malware analysis report

Static analysis result for SHA-256 a26fb52e1585e046…

MALICIOUS

PDF

250.6 KB Created: 2021-07-05 04:06:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 95186ee27339b6d4065d84dd642fd7d0 SHA-1: 1f1c439898d91bbbfce9cf66865be851cbb9f5a1 SHA-256: a26fb52e1585e046c217a898ff8b799d41c5740073a0634c652b3d2c6ce5bb02
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1534 Steal Application Access Token

The PDF document contains a lure impersonating Apple, directing users to a URL that promises game hacks and potentially MFA harvesting. The document body, though heavily obfuscated, contains references to 'Apple' and a URL associated with game hacks, aligning with credential phishing and potentially further exploitation. No scripts were extracted, but the PDF structure and heuristics suggest a malicious intent to trick the user.

Machine Learning

  • Nyx PDF Classifier clean score 0.0098

Heuristics 8

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/1330123889/what-is-pubg-uc-carding-game-hack.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/1330123889/what-is-pubg-uc-carding-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb//repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/hackear-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-glasses-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-full-version-free-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pet-trainer-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-iteams-in-roblox-using-to_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-snow-shoveling-simulator-free-santa_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/telecharger-hack-pour-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-free-top-hat_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
stream_024_off00037bff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x37BFF 26180 bytes
SHA-256: 399244c79fcc447e7298ab87bbf6a786a37e7c99e18b99c50730bebf14e37bd6
font_01_sfnt_off0003b96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B96C 18888 bytes
SHA-256: 94a0c96fd0614f3033d2c8b67fc4e8fc6d8a8d6a0637dd0a9957c2f297bd6fd0

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