Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e8b0f59c92297c…

MALICIOUS

PDF

43.6 KB Created: 2021-05-19 04:43:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 70c070c0b1d0634b4b16e93c9b478d1e SHA-1: b88d44b7b4aa8fb53db19d2d850835a8225f71d8 SHA-256: 77e8b0f59c92297c1a613299919cee397e0dd44ef6827ec39b3e76f0ba6e775e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free currency generators'. The primary lure URL is https://netcdn.xyz/app/1094591345/pokemon-go-free-remote-raid-pass-january-2021-game-hack. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/1094591345/pokemon-go-free-remote-raid-pass-january-2021-game-hack In PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/robux-com-free_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_off00004c11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C11 24684 bytes
SHA-256: a514a31c710e2112e179bb8130f3346ad82bc5b510e9a79dc7a3b5d945e9f8b0
font_01_sfnt_off000084d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D5 19356 bytes
SHA-256: e1e0d0ebf95c96f9ac6546d4e055a554af867b2bd8df1dd34d3ffcaba72f6c6d

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