Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba589728b5766a5…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 11:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 220bc8b37df06b34df0f2a52bde6f959 SHA-1: 85d5c0a1538a7dd10d5d80976d189111302b0ab4 SHA-256: 1ba589728b5766a51253490c6257cbb812f8766b7ff30b265805e0715788363d
122 Risk Score

Malware Insights

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

The PDF document contains a "game hack" lure, directing users to a URL that likely serves as a landing page for malware distribution. The heuristic 'SE_CLICKFIX' indicates the document attempts to trick users into executing commands, further supporting a malicious intent. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to exploit user interaction for payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/how-to-get-minecraft-on-chromebook-for-free-game-hack PDF link annotation
    • http://stansabbiatura.com/images/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://stansabbiatura.com/images/which-pokemon-go-free-server_GM1094591345.pdfIn PDF document text
    • http://stansabbiatura.com/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://stansabbiatura.com/images/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://stansabbiatura.com/images/how-to-get-free-pet-food-on-coin-master_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_002_off000036c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36C8 25216 bytes
SHA-256: e9bc26bf0f09ccaa51596e3807da911268efe70daba5f0239978465bd2121bfb
font_01_sfnt_off00006f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0A 18628 bytes
SHA-256: f21871f293e1374cce8b481ffeffb78eba3f21dd05dabec399dd2d571c50d8ba

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