Malicious PDF — malware analysis report

Static analysis result for SHA-256 5842505c37e1f04a…

MALICIOUS

PDF

43.3 KB Created: 2021-05-10 16:34:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cd61b356e01faadf7554d9f5d818ac93 SHA-1: cc168af345600086e9f8159d447a437abe14c4b0 SHA-256: 5842505c37e1f04a6ddeb787c5b39d492b6b9c220fa01a7197160c5765c627dd
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious domains and IP addresses, disguised as offers for game hacks and free in-game currency. The document body and extracted URLs strongly suggest a lure to trick users into visiting these sites, which are likely to host further malicious content or phishing attempts. The presence of multiple redirector links and the ML classification indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/minecraft-pe-server-hosting-free-game-hack In PDF document text
    • http://183.91.70.11/repository/promo-codes-to-get-free-robux_GM431946152.pdfPDF link annotation
    • http://183.91.70.11/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://183.91.70.11/repository/coin-master-free-spin-and-coins-links_GM406889139.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_off00004be5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE5 26044 bytes
SHA-256: 280d023e0d01758ab77e019189cb80568675d444f08946e62b08a500ae57415e
font_01_sfnt_off00008718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8718 18264 bytes
SHA-256: 5ec3f0b561cebc5d47f64e939320a46a649b92723dcace5f5f230f044584545d

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