Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bb434c380b4fdc…

MALICIOUS

PDF

39.5 KB Created: 2021-05-22 17:35:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bf7fa08bacf4648d8f3533e955f5abbf SHA-1: 312990bff368a4828e45e00b16dfbf19afa70bb7 SHA-256: 27bb434c380b4fdcfbca9f356856b6aa3437c1dd405858bfefc6fc5051cae942
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to a website offering 'free game hacks' and 'buy tiktok followers'. The ML classifier and heuristics strongly indicate malicious intent, likely to lure users to a site that may host further malware or phishing content. No scripts were extracted, but the presence of multiple malicious URLs and the 'game hack' lure are strong indicators of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/835599320/buy-tiktok-followers-free-game-hack PDF link annotation
    • http://www.imperialaccountingfl.com/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-hack-2021-no-survey_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C8 27564 bytes
SHA-256: 9679e3d3e8dcd8858461c58000f4ceb21549e2b17c7c25fdcd771d1edd6cccab
font_01_sfnt_off00006f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0E 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off000078ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FF 18232 bytes
SHA-256: 961899ff1eb424bdaf12ead7fcaccf2d09ae623c60a9c1ffe8485e19a18d4dd1

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