Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba22349b5f486ac0…

MALICIOUS

PDF

33.0 KB Created: 2021-07-20 07:40:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 50b40bb1fb4006f589690e63ab627246 SHA-1: e9e45ab333428089ce7784015f744da825ed81a9 SHA-256: ba22349b5f486ac082c7b53599a91c30b926a40c80f2a964b750947676f08359
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/406889139/coin-master-free-spins-2021-game-hack PDF link annotation
    • https://ase-sinaloa.gob.mx/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://ase-sinaloa.gob.mx/images/how-to-get-free-robux-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
stream_002_off00002c33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C33 22692 bytes
SHA-256: 325133f632783bcc215d2263f6bf78659ee02140dc6720cea5b67bfb2a218919
font_01_sfnt_off00005eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 18288 bytes
SHA-256: 9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871

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