Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a568d5665900725…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 21:14:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: cfa09248d35b1ca790c65df45cc15f35 SHA-1: 8f72bb7a1f10c071026b9278ffc313634dbac395 SHA-256: 2a568d5665900725670ac1b45794e6e0e076ca98bfc66c8a83a9f81c8e1edb09
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body, though heavily obfuscated, contains similar URLs. These findings strongly suggest the document's purpose is to redirect users to potentially malicious websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-spins-coin-master-no-survey-game-hack In PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/rape-simulator_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://kim-kinder-im-mittelpunkt.de/images/coin-master-free-spins-only_GM406889139.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_003_off00004cb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB3 24604 bytes
SHA-256: 587e7bdc74867b4e83c4e75633824b9b8586ea8fb7afad50587062ebbb1e6a3b
font_01_sfnt_off0000840a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840A 18320 bytes
SHA-256: 6a03f57263559e9587b81532abc9fd32f424c2609b001658afc37b888698790b