Malicious PDF — malware analysis report

Static analysis result for SHA-256 5702a555954030cf…

MALICIOUS

PDF

42.0 KB Created: 2021-05-12 13:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cdf3a6c5df075008df19ff7a16210c10 SHA-1: f624dac6f14adcd809903e752f2ab74563ebc9dd SHA-256: 5702a555954030cf3080d31fef0bef4b6b4d67681bf71ec8bc37f02758ff3c2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful content. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest a phishing or redirection attack, likely initiated via a spearphishing attachment.

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/479516143/free-minecraft-accounts-reddit-game-hack In PDF document text
    • http://dieter-sauter.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spin-appscoin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-codes_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_off00004a41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A41 24756 bytes
SHA-256: 5031ac241bed551243fa916c211e7e4b5c9fb5cf9560c022f7085887e4c0a8c9
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 18024 bytes
SHA-256: 8cc2f99dc924a15d52918b37ec4a77595277c9fc296e6ac0964170e61a15a16b

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