Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d9982f3ce8fdb5…

MALICIOUS

PDF

47.0 KB Created: 2021-05-14 04:46:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ac1dc5936f880743294ad44207b4756b SHA-1: 6103682d66385b66bc4a75250c41b220375abaf7 SHA-256: a0d9982f3ce8fdb5fc07db79b9f5dc86351af3125b4781c8f4065f44cb38768b
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 Robux' or 'game hacks'. The primary lure URL is https://netcdn.xyz/app/431946152/free-robux-only-1-step-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/free-robux-only-1-step-game-hack In PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://darulfalah-tulungagung.com/__statics/gudangsoal/files/coin-master-support_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
stream_003_off0000491c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x491C 26600 bytes
SHA-256: d59db40f39c3ed399e71f319457d267fc4a591092f902f31158f985b3289b97b
font_01_sfnt_off000086e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E0 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000093f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F1 18656 bytes
SHA-256: 070bf31dcf9002553526675ed1cd7b39f0747279791c235f0424fbc506b236c5

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