Malicious PDF — malware analysis report

Static analysis result for SHA-256 a50621e16ef7fecc…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 08:38:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 41d45971f6da76e3f3901dd3a4a3ba7b SHA-1: 518f5ca72e4b88322be072d8ca63bc9d14819864 SHA-256: a50621e16ef7fecc5770cbc9c4a03ae3d9efbd5b9f9f81529e0dc4c49bf23fc4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators. The document body, though heavily obfuscated, contains URLs that are likely part of a phishing or malware distribution chain. The presence of multiple malicious links and the ML classifier's high confidence score indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • 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.
  • 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/479516143/how-to-play-minecraft-for-free-game-hack In PDF document text
    • http://arkivthy.dk/images/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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_002_off0000353a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x353A 26372 bytes
SHA-256: 055a27b22cc676cf2e03efe0f0a39690ae98a60360434c31814ce1e58d11bc36
font_01_sfnt_off00006f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F17 18284 bytes
SHA-256: 30e565cae926cf2505d0f64cbbb860d09a66a84df24e80d913481d9233f56de2

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