Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e72939b16bd0443…

MALICIOUS

PDF

34.7 KB Created: 2021-06-23 02:58:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2272820e1f9b522e227d161f3c32a067 SHA-1: 46855197dc70e47977b481c0e7dd064e69023445 SHA-256: 2e72939b16bd04432dd4846b7e00cb853a43e7be5a6395a55c287709d8a8b5e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs that lead to a known malicious redirector, masquerading as a game hack generator. The document body and heuristics indicate a lure for free game currency, such as Robux, to entice users to click the malicious link. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution 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.co/app/431946152/free-robux-hack-no-verification-game-hack In PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-2021-windows-10_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-free-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/get-robux-for-free-on-your-browser_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/can-pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/pokemon-go-free-pokecoins_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-claim_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/roblox-hack-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri8jember.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-ios_GM406889139.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_off0000308f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308F 22276 bytes
SHA-256: 3a9a80db0998dd20f32549271a4d207477b443653ebb2cc7d8aa3c69bce164fa
font_01_sfnt_off000061d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 19244 bytes
SHA-256: 96540bd7c84d60e769713d590412c745bf113fce47b0f54684cca50d2dde6ca8

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