Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ee436c00789e0e…

MALICIOUS

PDF

43.9 KB Created: 2021-05-20 04:24:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b566d7f8928b3a5f416d2154e59d0cc3 SHA-1: 852437c171fb85229e92e2275ecf70c3596b1985 SHA-256: 40ee436c00789e0e8fa30274cd3522609b27671810277858b2aee5862b86ef72
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users to external sites, masquerading as game hacks and generators. It directs users to malicious redirectors and a large link farm, indicating a phishing or scamming attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.
  • 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 https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-ps4-game-hack In PDF document text
    • http://pechativmoskve.ru/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://pechativmoskve.ru/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://pechativmoskve.ru/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://pechativmoskve.ru/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pechativmoskve.ru/images/tiktok-free-key_GM835599320.pdfIn PDF document text
    • http://pechativmoskve.ru/images/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://pechativmoskve.ru/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pechativmoskve.ru/images/coin-master-free-spin-and-coins-links-2021_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
stream_003_off00004a2a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2A 31268 bytes
SHA-256: 8162c9f12fc873849dfe7fd0e31f5eb7f8218c878a6df0113f657935582bfced
font_01_sfnt_off00008a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3C 18088 bytes
SHA-256: 3c584cfdb2e84eddbd4369948c7cb3512903decb89ab4dae7c156f2377516814

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