Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f5500d9555c22bc…

MALICIOUS

PDF

46.1 KB Created: 2021-05-12 15:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b4ea9830c2b3ba92483ec9a69ad6dd65 SHA-1: 30e4a6a03f19a2cef0c97b31849e3cdd17b33821 SHA-256: 1f5500d9555c22bceda0612aca8d5e1cc579d0d14355e58dda277edf1a394bae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks or generators. The primary lure is the URL 'https://netcdn.xyz/app/479516143/was-minecraft-ever-free-game-hack', which is associated with a game hack theme. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack, likely intended to lead users to a malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/479516143/was-minecraft-ever-free-game-hack In PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/cm-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/freerobuxhack-us-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00005001.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5001 25592 bytes
SHA-256: 518e98f03a08184ac1a20978a8e51ef3286e0aadd8416dd2c835b4fcc0282ee2
font_01_sfnt_off00008930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8930 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000931b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x931B 17880 bytes
SHA-256: fa9564ce5793f03604dae66ea4261aaef87f9e1e7420b634dd5196a1b51aa919

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