Malicious PDF — malware analysis report

Static analysis result for SHA-256 3078df0c0a0ba20f…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 16:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6204a08952f01dd139293b1304bf77f2 SHA-1: 831c7b23144bce97d7b056ac020aa636528c6361 SHA-256: 3078df0c0a0ba20f4fefa6a5a4632221ba4004906d4e617a9649a26e4a942859
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising free Robux and game hacks. The document body and embedded URLs strongly suggest a lure to a scam or potentially a phishing site. No scripts were extracted, but the presence of malicious links and the ML classifier output indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-giveaway-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-free-robux-no-human-verification_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_off000048c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C8 24900 bytes
SHA-256: 42997ea25231db6f9de13805475e9f99024b28a6e3094ba6ceac15285df27b19
font_01_sfnt_off0000822a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822A 18820 bytes
SHA-256: a907981f6338d23acda294c558170907db38f399f16fdb2ca0bc536a0b707f6d

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