Malicious PDF — malware analysis report

Static analysis result for SHA-256 a065548ac97a7698…

MALICIOUS

PDF

45.2 KB Created: 2021-05-12 23:50:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 33ecab0b1920946d0738970352b7ab04 SHA-1: 09137faea680c8f4b9a5e8aa9e4167f3b41c4b8e SHA-256: a065548ac97a7698458915be64608d8b039bdb7f6568961cdd5c510f0adced13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and generators. The primary malicious URL identified is https://netcdn.xyz/app/479516143/free-minecraft-account-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to redirect users to potentially harmful content or further stages of an attack. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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 https://netcdn.xyz/app/479516143/free-minecraft-account-game-hack In PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D70 25064 bytes
SHA-256: 84a79a3a6d3569781f7109f536709c8a0bbb52eb092246ef064cb725a79ed331
font_01_sfnt_off000085b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9B 17848 bytes
SHA-256: 6e6a79a2e8d921ce4110ee7bea64574f9639f41d67ba7d7747bc91dcd849eff6

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