Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ea4ea0ccda9bf3…

MALICIOUS

PDF

43.5 KB Created: 2021-05-14 07:20:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ec855092905d8f4940e2621a47490878 SHA-1: ac5f04fff1ed2bd9996390bd40e5d1bc34edbb04 SHA-256: 34ea4ea0ccda9bf3a9402ea99d7aa0dc75baa892aa1444bc4c8e423a60d05700
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body, though partially garbled, contains text related to 'Free Robux' and the malicious URL. The presence of embedded URLs and the ML classifier's high confidence further support the malicious nature of this document, likely intended to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/get-free-robux-no-human-verification-game-hack In PDF document text
    • http://serviio.org/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/wurst-commands_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://serviio.org/images/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://serviio.org/images/collect-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_off00004aa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA4 26184 bytes
SHA-256: 45149dbecc7578660b749388440e916b58e1d860219d523c6784f644e5c758a8
font_01_sfnt_off00008611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8611 18860 bytes
SHA-256: 77094cb8e4b41d81131149df95963a95cd1356d500cc75fcdf894a2f9afc6be7

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