Malicious PDF — malware analysis report

Static analysis result for SHA-256 b345532c65c7e45b…

MALICIOUS

PDF

37.7 KB Created: 2021-05-23 07:11:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1cfe5d768b7c7b9780e0df003237c4cd SHA-1: 5272fe58c71d43c658a045ea6a82333f53d2e1d5 SHA-256: b345532c65c7e45b22bd219070c34bc541abf4b5b25dd65cfd37b5c5e7ebcf99
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, including one that impersonates a 'Roblox Free Robux Codes' generator. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malicious content or exploits. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/roblox-free-robux-codes-game-hack In PDF document text
    • http://addair.co.uk/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://addair.co.uk/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://addair.co.uk/images/how-to-hack-coin-master-facebook_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_002_off00003425.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3425 27408 bytes
SHA-256: c5d4acceac0ac59f8cb35529baf67cc8565b54496668c8cbdf684b294bad4312
font_01_sfnt_off00007240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7240 18260 bytes
SHA-256: 40a15a9049e9412bdd5c9a35f1903570ad5947e976b8939b833c9d7797e77bf9

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