Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f7a1fbbf683d79…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 20:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a4ea648917ca0b47bf87d201e162a9cd SHA-1: f640b10872abe108e6014b42e0c9832689faf841 SHA-256: b2f7a1fbbf683d792c761e9555e149dfeab5e1d4163c27c22b5af15e5ce76583
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/roblox-free-akatsuki-shirt-game-hack. This link is presented as a lure for game hacks and generators, suggesting a social engineering tactic to trick users into visiting potentially harmful sites. The presence of numerous other PDF links further supports the phishing or redirection 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/roblox-free-akatsuki-shirt-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/best-tycoon-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-roblox-accounts-that-have-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-the-advanceddisk-in-loomian-legacy-roblox-free_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/get-free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/ghost-walk-hack-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/pet-ranch-simulator-roblox-hach-cheat_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-robux-for-free-no-human-verification-ipad_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/all-free-rthro-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/when-was-minecraft-free_GM479516143.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
font_00_sfnt_off0000348f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x348F 22368 bytes
SHA-256: c497166bf609ed5b8b47eaf60c77b71aa1458d8843f89e78d8074d1ff403bf27
font_01_sfnt_off00006665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6665 19348 bytes
SHA-256: 72cbef729a46f2a7889659418a65f344a264c6a0a09b85d18406a479d55c52e1

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