Malicious PDF — malware analysis report

Static analysis result for SHA-256 19895471d344a34a…

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 20:38:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8f57cb0c58a529317bbe9c6aa225cb86 SHA-1: d92b1c2c39fb44cd158b251a1e87d5d6ff143464 SHA-256: 19895471d344a34a802d234bddd26cd70fcde29707aadb676ad1f204190ab176
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 0.9971

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 https://netcdn.xyz/app/406889139/free-spin-link-coin-master-app-game-hack PDF link annotation
    • https://rieber-transporte.de/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://rieber-transporte.de/images/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://rieber-transporte.de/images/fb-coin-master_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://rieber-transporte.de/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://rieber-transporte.de/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

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_003_off00004de5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE5 24776 bytes
SHA-256: 024efe7367ad7643a46b1b6894c8c4cf08248f612e2b94f79bb5ca6135d09e4c
font_01_sfnt_off000085b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B7 18056 bytes
SHA-256: ebbf7a22afcd0cf508ceb812a131aae4598156f522305d6cc1c9940cc11c625a

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