Malicious PDF — malware analysis report

Static analysis result for SHA-256 54189e328fc1294e…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 04:43:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f3881d8f59761b2989238dd586de96a3 SHA-1: 4da7ed374292b0f67f0b17b9be920e4f9b9dd758 SHA-256: 54189e328fc1294e8c3026ac13d30c04137a12fe3d1735ff1e0835611d918245
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link redirects to malicious infrastructure, and the document body is filled with SEO-optimized links pointing to other PDFs hosted on a suspicious domain. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/roblox-prison-life-v2-0-cheats-game-hack In PDF document text
    • http://aeridefense.com/image/data/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-game-private-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-dragon-ball-online-stats-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/nuevo-hack-de-robux-2021-funcionando_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
font_00_sfnt_off000031c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C0 22456 bytes
SHA-256: d71531e8e12959584e08fbdd54ab325e6a0428d6755feb6f3a7867a7c97cf73c
font_01_sfnt_off000063d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3 19460 bytes
SHA-256: 0b4aec35a06b1b04810887549f847f5bef215d27a05d9f12c6303c0e58de5d15

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