Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7fdbb2a4240dad1…

MALICIOUS

PDF

35.9 KB Created: 2021-05-24 00:49:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: cac1cc18845c0638fa3c8c452fd4fdfe SHA-1: 7289080dad4b15e3facfc732e7238513a94fe708 SHA-256: b7fdbb2a4240dad130468e8be0070b282fbf4bd8d22a59fbc73b97dc224a501b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with promises of game hacks and generators. The document body and heuristics confirm the presence of these deceptive links, aiming to direct users to potentially harmful websites. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-servers-to-join-game-hack In PDF document text
    • https://htdvn.com/public/upload/files/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3427 24364 bytes
SHA-256: f95a813945cb4da54d528142e4def1d34bfe2e3f106748531542fb78b0a45230
font_01_sfnt_off00006bb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB2 17992 bytes
SHA-256: f4dddb1eb99788babbc28e2933b16aea696a65c0930c8e69ff3f00d50dcb50ca

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