Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f6d686ccc56f8a…

MALICIOUS

PDF

35.6 KB Created: 2021-05-24 10:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 468ccab587d671abf65d851bb15722de SHA-1: cb483e651923bcc58ccf4791c43c344ffd903779 SHA-256: 57f6d686ccc56f8acc9f31e3fbd40a0ac390526c228918321a21ee9aa133e4f8
200 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, disguised as game hack generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or downloads. The presence of a fake CAPTCHA heuristic further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/431946152/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • http://www.lacarla.dk/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.lacarla.dk/images/free-robux-2021-no-verification_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_off00003163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3163 24356 bytes
SHA-256: 3b6584a84605447639151f988dae0cd3ed393587e93e346a31d0b15751cee92a
font_01_sfnt_off000068a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A1 18608 bytes
SHA-256: eebf4fd0ce8e014a693b7448b6f63c7fd528199174cddc1a90a23252bff1a633

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