Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b1aef43d232ced…

MALICIOUS

PDF

45.3 KB Created: 2021-06-07 00:12:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 13c4ee9faafe990f5e9d435e4d3a4490 SHA-1: abcde910678343cfd5d17f21cc015ac7a89a1702 SHA-256: 58b1aef43d232ced4f44a79e432b8202997a2666ce44feb02d24854cd0985372
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to a known malicious redirector infrastructure, specifically advertising 'free Robux' or game hacks. The primary link directs users to a URL designed to exploit interest in free game currency, likely leading to further malicious content or downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/haw-to-get-free-robux-in-windows-7-2021-game-hack In PDF document text
    • http://boliviagasenergia.com/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://boliviagasenergia.com/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://boliviagasenergia.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://boliviagasenergia.com/images/how-to-get-free-robux-without-email_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBF 25484 bytes
SHA-256: d6c2ba6701346dc2bdb634be87d77b8f749eebe591affe23137d209d5656df80
font_01_sfnt_off00008a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A97 19460 bytes
SHA-256: 461facc2bd84d27e436d19ac85da4b81eb41e4bf427bab90c1fd17b74ff1d882

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