Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f2e15f932575b5…

MALICIOUS

PDF

35.2 KB Created: 2021-07-07 00:20:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a1b6eb327abaeab3a0e73479991c03a5 SHA-1: 02ec1809f0304c0cf100fd87593f2d89d36fa8eb SHA-256: 32f2e15f932575b56ca80ed843560247ce26463e345f99a3bcac66572f5a627d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' which redirects to a known malicious infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt designed to trick users into visiting a malicious site.

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/431946152/earn-free-robux-for-roblox-game-hack In PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/robux-only_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/roblox-cheat-menu-download_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/roblox-admins-free_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://learning.man1kabgorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-password_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_off00003390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3390 22324 bytes
SHA-256: b036c23e5083480f6669c2a7c528366ef791a606cb899dd02532da9307601cee
font_01_sfnt_off00006552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6552 18788 bytes
SHA-256: 098180cd614d2624df7268bdc42eb390b3940660e3b4a5d90fd1bd8a19720ac8

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