Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e703b1e6925c8b4…

MALICIOUS

PDF

38.0 KB Created: 2021-05-20 15:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 26f7f02c03705d256b2ef520d6a98473 SHA-1: c140fe5993d9df05a211eb2c66dbbfcf5f594d9e SHA-256: 0e703b1e6925c8b4f5557b2196c7bd78654f86fb1f44ee5a7eef998f6816bab4
200 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics, presenting itself as a lure for game hacks and generators to trick users into executing commands. The embedded URL and multiple linked PDFs point to malicious redirector infrastructure, likely serving as a downloader for a second-stage payload. The 'SE_CLICKFIX' heuristic indicates the document attempts to bypass security measures by instructing the user to manually execute commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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.
  • 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
  • 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/free-minecraft-hacks-game-hack In PDF document text
    • http://www.pleiadisrl.it/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pleiadisrl.it/images/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D6 29668 bytes
SHA-256: 817e09ca059ba391804c3fd8ae4cd7ed8bfa9e5b95151b38f9ac0da4982b93fa
font_01_sfnt_off00007552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7552 17740 bytes
SHA-256: 02673fc9b31aa1f7767db1cd16a9f6370da751ac2c2fa3ca820772adadbcecd3

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