Malicious PDF — malware analysis report

Static analysis result for SHA-256 64695681b0ae00d7…

MALICIOUS

PDF

51.2 KB Created: 2021-06-11 07:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3bd655d8ca933cc4c204f67578f942fd SHA-1: 6d108d57e19150fcefbea167ac366d26be807ad5 SHA-256: 64695681b0ae00d750b00024d88c3385716e3fa58ea5daf613e9e98d56fed7df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generator' and 'game hack' lures. The document body and embedded links strongly suggest a phishing attempt to redirect users to potentially malicious websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/how-to-get-free-robux-new-game-hack In PDF document text
    • http://www.eaapiaria.es/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/roblox-script-hack-name_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/pokemon-go-freezing_GM1094591345.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-realms-roblox_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/get-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://www.eaapiaria.es/images/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E2D 40000 bytes
SHA-256: 78c6b17e8dff237c600425b70e07fd2245204408e0f8a97c90149ba13da2fb5a
font_01_sfnt_off0000a60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA60D 18280 bytes
SHA-256: 7e7533c504188a5900b8c09e93425387c2b8a1679558812159b801779c53e90d

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