Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7808e3ddec84561…

MALICIOUS

PDF

40.9 KB Created: 2021-05-30 02:00:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 804669eba8e2b3db6210f74ec23eeb23 SHA-1: f96af9387e015370b6cc4472bb983291eb0e2c9e SHA-256: a7808e3ddec84561e2709733a2630f8e6825f1fdae623104b78d6291c7bd6100
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and scam-related content, specifically mentioning 'free Robux' and 'game hack' lures. The heuristic firings confirm that the PDF links to known malicious redirector infrastructure and is designed to trick users into clicking through to potentially harmful websites. No scripts were extracted, but the document body and heuristics strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7534

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/431946152/free-robux-real-game-hack In PDF document text
    • http://sagarirrigation.co.in/wp-content/uploads/fsqm-files/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://sagarirrigation.co.in/wp-content/uploads/fsqm-files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://sagarirrigation.co.in/wp-content/uploads/fsqm-files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://sagarirrigation.co.in/wp-content/uploads/fsqm-files/free-robux-quiz_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003179.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3179 30360 bytes
SHA-256: c36b7fa0f69e13c517200e37037b6248a821b4e7fed535f143d3dc29cc3d2e5c
font_01_sfnt_off000074b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B6 2880 bytes
SHA-256: 552e62132cae3603ce0819827e44d96a992bd06014cc5080bf3af4b2ea155b3e
font_02_sfnt_off00007e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8F 18316 bytes
SHA-256: 0bff543ee19f4ca1641aaad3399cdc0a52c610caf2abd08cd8655404047fbeff

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