Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa8310a0fdf5719…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 17:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: f06779f37782e4782e0ff01073d0b61c SHA-1: bd0086d3ff789b84186a14ad623dd0a5e017c946 SHA-256: baa8310a0fdf5719c384a2eee1e23c583816d0953274f8fb55d479faa370b951
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links designed to lure users into clicking on what appears to be a free game currency generator or hack, impersonating brands like Facebook. These links redirect to known malicious infrastructure, indicating a credential phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to exploit user interest in free in-game items to compromise their accounts or systems.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-get-free-robux-on-roblox-game-hack.
  • 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.xyz/app/431946152/how-to-get-free-robux-on-roblox-game-hack In PDF document text
    • http://genialica.de/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/robux-boost_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AF 23788 bytes
SHA-256: 6b357accd25ff553fcb1be73df6797dea4ecd6d86bf2362c280fd83267431cc2
font_01_sfnt_off00007ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA7 18356 bytes
SHA-256: 07f7f5fe088ebb6a81b9aca0d3b7acb37488304f642f9e675d153fcc87cea6c5

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