Malicious PDF — malware analysis report

Static analysis result for SHA-256 8596f24a9fa9c129…

MALICIOUS

PDF

47.2 KB Created: 2021-05-13 11:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 5be441debfe64944903d582d0f1f54ac SHA-1: 08b85d6f88217864f6f30a35da77f518248c170c SHA-256: 8596f24a9fa9c1292b62f547bc2a84c69729c13da9dd1b38e15a01612fc9f6eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, limiting the analysis of further malicious behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-get-free-robux-on-chromebook-game-hack In PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/hack-avatar_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BFB 26536 bytes
SHA-256: c1a8baaa7f5be9770f4c4d8d8d93c0fe5af30a7849cde547fd6d7998788fc009
font_01_sfnt_off00008a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A66 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9451 18880 bytes
SHA-256: cfbdee24d7402b99052158ce8ccd316620959aaec27a5d82eaae160d81e49f1b

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