Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5504cd97138251…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 11:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e23cdb474af76cccb03e3b6d58c7b3bf SHA-1: 6043c24a493ce58ed2c58dcf879ce7296914da4b SHA-256: bd5504cd971382514d6750635a4326a9b882f090c43458335e42fb559f9e5c2a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs that redirect to known malicious infrastructure, specifically a link related to 'free generator / game hack'. The document body also contains this URL, suggesting a social engineering lure to trick users into visiting a potentially harmful site. No scripts were extracted, but the presence of malicious redirector links and the lure indicate a phishing or scam attempt.

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.tw/app/479516143/how-to-play-minecraft-with-friends-for-free-game-hack In PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-to-get-free-clothes-on-roblox-on-a-phone_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-bc-roblox-android_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/exploit-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-roblox-scrpters_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-robu_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/how-do-u-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-but_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-cheat-for-robux-no-phone_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manbarsel.sch.id/__statics/gudangsoal/files/free-robux-co_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
font_00_sfnt_off0000316b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316B 22124 bytes
SHA-256: d9a0118fbbd98d2ff45ad42c507d3e6e4093dc28c1756966c7c04037f22947a4
font_01_sfnt_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 19108 bytes
SHA-256: 5162437770a110f8fb1f842d380ac1671e371cd1c83a627391e03ed6502866fc

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