Malicious PDF — malware analysis report

Static analysis result for SHA-256 542d2104e7cd7867…

MALICIOUS

PDF

42.0 KB Created: 2021-05-19 03:34:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: beff57edeba07384cb920a71133f96e3 SHA-1: 068bea32cadc5e8c3f35ee9f92a8ed13feb9c5c8 SHA-256: 542d2104e7cd7867e75e8d24eeb6eee809ba429fc275bfbcb35042229a76a031
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one identified as a malicious redirector. The document body text and extracted URLs suggest a lure related to game hacks and free currency, aiming to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-spin-link-for-coin-master-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-daily-spins-link_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_off000048ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BA 25072 bytes
SHA-256: d48705829b5ab716085af9fa8008216869af9efbb7244e9711dee67803c3eaed
font_01_sfnt_off000082a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A7 18056 bytes
SHA-256: b406b504177f6b640bc1dbcd325e02770f8a0621b64b682f119f0b5c1d0e735d

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