Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be8ce0b74656851…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 22:30:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3d3c914965bda4248b600f4bff89af7b SHA-1: e3409da72ff7ac76e8a4a61d0dcff937e1a68c68 SHA-256: 5be8ce0b74656851dd81a2636ab7e24fa864a5e057b5475efd4651e6cac7815f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, including a known malicious redirector at `https://netcdn.xyz/app/406889139/mcpe-master-hack-coins-game-hack`. The document body and heuristics indicate a lure for game hacks and free items, a common tactic for distributing malware or leading users to phishing sites. The presence of numerous PDF links suggests a link farm intended to improve SEO for malicious content.

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.
  • 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/mcpe-master-hack-coins-game-hack In PDF document text
    • http://rafaelmontesinos.com/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/hack-roblox-players_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
stream_003_off00004aa0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA0 24964 bytes
SHA-256: 56f9f8d19f60c20893087702d676aede196e4f9450da3402172d0a6366400bdb
font_01_sfnt_off000083a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A3 17892 bytes
SHA-256: 0c63e033d5ffe887ffec85b5cafaf72e8c864209b86636c790ff2846ce341ff6

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