Malicious PDF — malware analysis report

Static analysis result for SHA-256 617748d9a16beb88…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 04:42:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fabc367d35973b91a94d2d60d58ff11b SHA-1: 8306a1edf110cacc03945c6190ec7ee65f68b7e6 SHA-256: 617748d9a16beb88cae091678716ea75c9096acacc78c1b5a31d540972139399
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to http://netcdn.co/app/431946152/how-to-hack-roblox-groups-game-hack, which is identified as a malicious redirector. The document body and heuristics suggest a lure related to game hacks and generators to entice users to click these links. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or redirection attempt, likely serving as an initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-hack-roblox-groups-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-promo-codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-promo-codes-2021-october-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/pusheen-tshirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-admin-commands-on-any-game-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-xploits_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-robux-hack-february-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/is-roblox-free-on-the-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-ios-mods_GM479516143.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
font_00_sfnt_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 22804 bytes
SHA-256: eaefe8546c28bf78fc1e9da430b3271749507e8c1cac8684499c9d18d89f4174
font_01_sfnt_off00006420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6420 19136 bytes
SHA-256: dc00909f76ea4d1bf051e61a63e59c484e52212a9ef84b4fd0fb1bb279dd1a6b

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