Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0b268568e7e823…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 00:53:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d236e4ef8b6b93bf51b2b985bd203da8 SHA-1: a71d42ba3f3d48dfd87c40a5cd2849478dc15e7b SHA-256: 4d0b268568e7e8231144b5512c008677fee7b1ebebb53e63211bce13cc639d0f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/roblox-script-executor-free-game-hack PDF link annotation
    • http://tasleemdubai.com/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-find-hacked-roblox-booga-booga-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/can-robux-hacks-ruin-your-computer_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/doomsdire-battle-roblox-hack_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-roblox-rich-accounts_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://tasleemdubai.com/userfiles/files/free-robux-codes-not-used_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
font_00_sfnt_off000031ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31EC 23296 bytes
SHA-256: 220a0ce1c2ff6285fd2c58268bb682c89b8b58f35f132656485200448f10360d
font_01_sfnt_off000066b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B5 19192 bytes
SHA-256: d66373ea5ab1b8b466fc6e6258f526b91ee4d86cf629368fdc40183b9a98196c

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