Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4465ef54d27e782…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 16:34:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9e809fa682a5ec1b895109357782d92b SHA-1: 55e40ab229eeb1588d5682acc16d1feb9fa8dd88 SHA-256: e4465ef54d27e782133236bf199b31f66eca5b76c7570dd679576d1747f57484
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including a primary redirector for game hacks and a large number of links to other PDF files hosted on a subdomain. The document body and heuristics indicate a lure for free game currency or hacks, likely to direct users to malicious or scam websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://netcdn.online/app/406889139/free-coins-for-flip-master-online-game-hack PDF link annotation
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://elearning.man2modelmedan.sch.id/__statics/gudangsoal/files/coin-master-free-coins-2021_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53BF 25380 bytes
SHA-256: 9f423f7f3877a9df9992735457ca1c337ff93ca60438169fa34910e622aed89c
font_01_sfnt_off00008e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E74 17960 bytes
SHA-256: b8276a24b9e111d30e0b115559c7a2e7144cbebc25d18c1e5fb7b20d8e0a0542

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