Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bd08fb2ec6fc61…

MALICIOUS

PDF

48.7 KB Created: 2021-06-11 07:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 90d5fac5ae42418bc03dc0a639f7c360 SHA-1: 460b0afc401ddbee8d9fe073961e14d7cedde8d4 SHA-256: 32bd08fb2ec6fc613f5a5bb57fbc1767f514a1baa1a303a4f7fb5587740f5ce7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious domains, disguised as offers for free in-game currency. The heuristic firings indicate that the document is designed as a lure, likely to lead users to a scam or a download of further malicious content. Although no scripts were explicitly extracted, the nature of the links and the lure suggest a common pattern of malicious PDFs designed to exploit user interest in free items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-small-amount-of-robux-fre-game-hack In PDF document text
    • http://aviaprofsoyuz.info/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-today-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-no-hacks-or-inspect_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/snapse-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-god-mod-hack_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://collectrobuxIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E4 27940 bytes
SHA-256: 2cbeb122e8e89a73a2faa571553797d24f5c6aaaa4bfd4201bed5efb2027a59e
font_01_sfnt_off000090e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90E7 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00009a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A87 18680 bytes
SHA-256: b8ea3418ac641472246550ffe08c00f0eb4dd35bbaeed3e9072209fb0ab041c3

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