Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5c4772351f191e…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 23:44:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3ddccae666f66cebea3653f51d200631 SHA-1: be354c284dbd590a325731cd9ea48d0a7af2bac4 SHA-256: cb5c4772351f191edc5732627ba00e9c230975af61043a5f56ede78e0cc15602
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 0.9980

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/robux-come-game-hack PDF link annotation
    • http://subarulegacy.com/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://subarulegacy.com/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://subarulegacy.com/images/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://subarulegacy.com/images/robux-game-com_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_off000048c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C2 29756 bytes
SHA-256: 3ed285c330cb2e3458ab3cbd30970aa29c7b517df846e2c8914d383bc6b7ffac
font_01_sfnt_off00008c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 18108 bytes
SHA-256: 23b39d788b4f94a358d85c543858153ed4c8a930a2b4b33f7e22821f7bb08b5c

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