Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb3fe437aaf178e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 15:01:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7c7a7cf9114440d119142dca7c9cd892 SHA-1: 6979711815f0eb34f5d432d19c4684f341a9bbc0 SHA-256: 3eb3fe437aaf178ec1ed228faa6865140067b38abf59d9975aca587a66ad50ec
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on "game hacks" or "free generators". The primary link redirects to a known malicious domain, suggesting a phishing or scam attempt. The document body and embedded links indicate a focus on popular online games, likely to exploit user interest. No scripts were extracted, but the presence of malicious redirectors and a link farm points to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/google-how-do-you-get-free-robux-game-hack In PDF document text
    • https://pneukalousek.cz/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-spins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/add-robux_GM431946152.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_off0000495b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495B 24320 bytes
SHA-256: e37539be0e5831ee001f71b0aa48e156eec43485884882548727c34aac4a478a
font_01_sfnt_off000080b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B4 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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