Malicious PDF — malware analysis report

Static analysis result for SHA-256 705d45ce1a569f69…

MALICIOUS

PDF

34.7 KB Created: 2021-07-02 05:00:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: df107c924f01169e6d2addd9e7d65f8f SHA-1: ca45dbfc59b0c10c30ec1c426fc42a77c36606c6 SHA-256: 705d45ce1a569f691c76ed2e187d21412dd60684c6c1c0c76a815383d30b1c0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which leads to a lure for a "free Robux hack". The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-hack-no-human-verification-2021-game-hack In PDF document text
    • https://www.mpos-organs.com/uploads/files/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/cheat-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/roblox-hack-apk-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://www.mpos-organs.com/uploads/files/files/free-robux-generator-no-verification-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0F 22104 bytes
SHA-256: 34607a9a0d60e94f64a2d19654c1349e19d254e8ebade3fbeb1477e88604f1cf
font_01_sfnt_off00005ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF0 19908 bytes
SHA-256: d5ac54c50af0792f07ddde931e37cc0aa25480d222d212732d8be9068e8cddec

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