Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ecf5fe2d6f8787e…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 16:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8dde6a9b433393f4ce51b0303a930530 SHA-1: 6ebc464762d010fc536ec7e86f081a861cd33e95 SHA-256: 2ecf5fe2d6f8787e6511c941c55317523ecdfdea775e086ac55af44023763a6b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. 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 0.9632

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/hack-robux-game-hack PDF link annotation
    • http://elektrofahrspass.de/images/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://elektrofahrspass.de/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elektrofahrspass.de/images/coin-master-mod-apk_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_003_off0000478e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x478E 25744 bytes
SHA-256: 2c8da13a2d5f399ddabc5f306bd3da26e2ac2638cf38f4dc5fea074cf7233f47
font_01_sfnt_off000082ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off00008c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5A 18248 bytes
SHA-256: 9805bb7d0eadd4beaac6fd3b5d5d8b6e8e5d33c97ce909732e364f826719e5d2

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