Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b163f86d98a056…

MALICIOUS

PDF

35.4 KB Created: 2021-05-22 14:06:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8c38c809c5c0e5d28d21603748b82837 SHA-1: fa2c1942a24f3d4ed54151888a3b79868a5e2f23 SHA-256: 79b163f86d98a056900472e25bb49b97623f6edd5b4ec0e9f9b35b633d67ab75
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links and text lures related to 'free generators' and 'game hacks', directing users to malicious redirectors. The document body and heuristics indicate a phishing attempt designed to trick users into clicking through to potentially malicious sites, likely to download further malware or engage in scams. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/406889139/free-coin-master-links-game-hack In PDF document text
    • http://massimocarpegna.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://massimocarpegna.com/images/tiktok-free-music_GM835599320.pdfIn PDF document text
    • http://massimocarpegna.com/images/free-robux_GM431946152.pdfIn PDF document text
    • http://massimocarpegna.com/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://massimocarpegna.com/images/minecraft-free-online-games_GM479516143.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_off000032a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A3 24520 bytes
SHA-256: 1af7571f7bf39c5ae9976aeb9706309167f678a99bf2ff0f75fd3927d6ba1a7b
font_01_sfnt_off00006a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5B 17880 bytes
SHA-256: dfe41e252eeea42f6a4072e9595d4435e06b86b6ad2d398cb4b971b8bcb02477

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