Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe7046dbaf7d223…

MALICIOUS

PDF

40.4 KB Created: 2021-05-24 01:06:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e2ea1d8b87b6874c6f7f941cb3f7abbc SHA-1: 9e77c36adc069750e6cbaec78c6cd2196eaec572 SHA-256: cfe7046dbaf7d223df1c2dc3dc124e1ba3b39de8e85205352a1501fbc5ac2e0a
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 0.7776

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/431946152/free-robux-legit-game-hack PDF link annotation
    • http://www.dciprotection.ca/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://www.dciprotection.ca/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dciprotection.ca/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.dciprotection.ca/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003174.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3174 27408 bytes
SHA-256: 16a0a6dba506b99f42a26f94f3ee5ec3d7b42adeeb806a2be903d7b31d83c18a
font_01_sfnt_off000071aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AA 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B94 18528 bytes
SHA-256: aa02e962ea97e6ca8489eff7fd27dc9c81bb0b76c5ed523337a23ffa677521ed

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