Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae118c3ab0518d4…

MALICIOUS

PDF

43.3 KB Created: 2021-05-11 01:36:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 80fe010e34d29b02bc8550fba67ed708 SHA-1: 9a79305f615f67e8c0b5a0dbbc98159fe5f102f2 SHA-256: fae118c3ab0518d464287e1868ef24e2bec00bdb74b4d85d55206722347d3498
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector, leading to a 'game hack' lure. The document body and embedded links suggest a phishing attempt to trick users into visiting potentially harmful websites. The presence of embedded URLs and a redirector link indicates an attempt to download or redirect the user to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-hack-a-roblox-account-2021-game-hack In PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-codes_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_003_off000049e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E4 25992 bytes
SHA-256: 249b37ab993ac75f6b2d79da97523e2d4bbe963c9d5d4921af8a104903cad64c
font_01_sfnt_off00008491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8491 18992 bytes
SHA-256: aeef6a7714c6357f73dd4bac3524810632f54ab1d1528492d13c90d39421ba58

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