Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12497ae7a7eebb8…

MALICIOUS

PDF

44.7 KB Created: 2021-05-10 17:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d8fe110b6342d47e57da73fb4c056d46 SHA-1: af94f6d4905cf5933485f6d4d341c5cbea4eacde SHA-256: b12497ae7a7eebb81a719887331721d34c27dba7ab566d4594820613ce54d3b1
182 Risk Score

Malware Insights

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

This PDF document is designed to trick users into clicking malicious links by offering game hacks and cheats. It employs a fake CAPTCHA or human verification prompt to coerce interaction, a common social engineering tactic. The document contains a large number of external links, many pointing to game-related hack generators, indicating a link farm or SEO manipulation strategy to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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
  • 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/406889139/coin-master-unlimited-spin-hack-apk-game-hack PDF link annotation
    • https://adirp.id/upload_data/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-com-free_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-imagine_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-blogspot_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A18 29704 bytes
SHA-256: e8914b48e5a4edb070306e76fe8933424587b8e62e13a22061c1e3933cd3de96
font_01_sfnt_off00008b8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8C 18584 bytes
SHA-256: 1f0ff171152404fee35ded77e01b9724573d4b9224166749f75d1c5d7d8d4db8

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