Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c45b1d002364a1…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 03:45:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3e1e0ea93d5d429150d8fc01a83340b8 SHA-1: 56c9015bcb0b6e80eb3f947ebe1024abfed363e4 SHA-256: 76c45b1d002364a194f472bc44d92fd445c78f638eee40d6770ac426cbfb5a9f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary link identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks, specifically mentioning Roblox, which redirects to the identified malicious URL. This suggests an attempt to drive users to potentially malicious content or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/ilum-hacks-roblox-game-hack In PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/robuxe-gratuit-site-de-hack-roblox_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-icebreaker-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-royale-high-cheats_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-unused-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-that-actually-works-2021_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
font_00_sfnt_off000032bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32BB 22900 bytes
SHA-256: 599596dcc60029f82d4db8f05e489f7a3ddc799fd9bd604146de7b85f30d2179
font_01_sfnt_off000065be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BE 19056 bytes
SHA-256: ca2d0a467241bb8e78f81053408f15513a06b8f543afa0880063bec4477a889d

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