Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f129022e662213…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 16:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 04baf2c53d9777f57c4a249dd9446d94 SHA-1: 35b730a4ce952d3fa17b7da235af392ba5def418 SHA-256: d1f129022e6622130f138c4441e3fd03158313bb666c7cec0daf9cc9e45c9eef
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to malicious redirectors and SEO link farms, masquerading as game hacks and free currency generators. The primary lure is for 'Coin Master' and 'Roblox' related cheats, directing users to URLs like https://netcdn.xyz/app/406889139/coin-master-free-coins-today-game-hack. The presence of multiple malicious links and the ML classifier output strongly indicate a malicious intent to redirect users to potentially harmful content or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • 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.
  • 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/406889139/coin-master-free-coins-today-game-hack In PDF document text
    • http://junktiquecollector.com/images/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-free-spin-and-coins-links-2021_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
stream_003_off000048bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BC 27852 bytes
SHA-256: 5e7e4994cbfc6069bdd7662c46fc6f90fbe7bbc5fde44a94479d8e1b4e151b69
font_01_sfnt_off000087e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E5 18064 bytes
SHA-256: e394056c4eb74bb544619b5782ef65607dab53e2149678f6173de5f10ac76a14

Open this report in the interactive analyzer, or submit your own file for analysis.