Malicious PDF — malware analysis report

Static analysis result for SHA-256 6618dd8aa5c126d3…

MALICIOUS

PDF

41.5 KB Created: 2021-05-11 02:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0f5743d1eda2b59b6149f0f352001704 SHA-1: c95986f411d59df49616badcab3589e383c4d182 SHA-256: 6618dd8aa5c126d3f3a7c9a068917d5ade896c77a0b1e290b872e83df49e3e3f
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 'game hacks' and 'generators'. The presence of PDF-specific heuristics like 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly indicates a social engineering tactic to lure users to potentially harmful sites. While no scripts were explicitly extracted, the nature of the links suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-hack-apk-download-for-android-game-hack In PDF document text
    • https://www.anagoria.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.anagoria.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.anagoria.com/images/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.anagoria.com/images/how-to-get-unlimited-robux_GM431946152.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_off000048d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D5 23820 bytes
SHA-256: f90f315385a369863a973a66ffdd177b2bb2c8eac5bdcd59e521159604c320d7
font_01_sfnt_off00007ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC9 18636 bytes
SHA-256: fa7a6da1b4bcc113a0958a5ae0d8c2ab7d580afb69fd53804aad306f80425e53

Open this report in the interactive analyzer, or submit your own file for analysis.