Malicious PDF — malware analysis report

Static analysis result for SHA-256 a083d3ebe8748814…

MALICIOUS

PDF

40.8 KB Created: 2021-05-19 23:37:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 457cb31fc466226e34f9708981d1c427 SHA-1: e78bfa2d25d5bd94c0846d459d74d3f9da57e889 SHA-256: a083d3ebe874881446592540c412676b9c4431372ca4a78356bee15645da09b9
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as free game hacks or generators. It also presents a fake CAPTCHA to trick users into interacting with the malicious content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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/479516143/minecraft-for-free-apk-game-hack In PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/robuxfree-con_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/corn-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://discord.ggIn 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_off000047f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F7 24080 bytes
SHA-256: 7f32b0cdc6737665c227cc51e85b50ec7c29f926d9e223fe5c4b45ea2910f416
font_01_sfnt_off00007df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF8 18056 bytes
SHA-256: d47e60dea5201fd8468efb81a59f0775697a9902aff7ce548d06165675d44cc7

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