Malicious PDF — malware analysis report

Static analysis result for SHA-256 c552a7a0134035af…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 09:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 49bc49ea0700c6555d5fa99e64bb8a04 SHA-1: e39bea6524bace820e6cae291fae992961237306 SHA-256: c552a7a0134035afc23aaaef79d41beb3825c952d45453bbabfeb2686ee52477
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/431946152/free-robux-not-fake-game-hack PDF link annotation
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/whost-get-gamepass-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak-for-vip-server_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-robux-for-ipod_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-hack-coin-master-ios-jailbreak_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
font_00_sfnt_off00003113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 22440 bytes
SHA-256: b0b868ad178e60444ccfb68ccd69cae63bd6b3b17712d60f20a2242a55794060
font_01_sfnt_off000062d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 18992 bytes
SHA-256: e4ac39d57ff956450bb8dd48df15acc1078399c4d14e18067568ebfa6ae85f6b

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