Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa60af970a83c5f7…

MALICIOUS

PDF

37.4 KB Created: 2021-05-23 08:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 62a358115bbf7fca4634b24d51b55c52 SHA-1: c01677428f98160fb7240f0517c47ebbaced7b85 SHA-256: aa60af970a83c5f7004b8540b008b837aafbd047f07c736a61dc76f3b7344b8c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The document body and embedded links strongly suggest a phishing or scam attempt designed to lure users to click on these malicious URLs. No scripts were extracted, but the PDF structure itself facilitates the malicious 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/free-robux-roblox-promo-codes-game-hack In PDF document text
    • https://www.stoehr-sauer.de/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://www.stoehr-sauer.de/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stoehr-sauer.de/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://www.stoehr-sauer.de/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://www.stoehr-sauer.de/images/how-do-we-get-free-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_002_off000032cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32CD 26136 bytes
SHA-256: 8bc09706ffe376774bdaab32267f555474c93eeb5b9825ee41ceb5be7c904c7b
font_01_sfnt_off00006fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD2 18676 bytes
SHA-256: 9297a3cb5fba7ca587652f513aa1222127deb04773b45a9c0f6482a9c793d56f

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