Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c86f0d2b1a4172…

MALICIOUS

PDF

46.1 KB Created: 2021-05-14 09:38:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 11c67ce73f1e501759a431493463ad8d SHA-1: 11f8116ec8d5dab50b0904aa04934b38c3427667 SHA-256: e8c86f0d2b1a4172b42bf04e9c72c34c709d925ca5e795a312ca80cc6c2279c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering "free generators" or "hacks" for popular games, indicating a lure for users to click through. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous embedded URLs supports a phishing or malware distribution campaign. No scripts were extracted, but the document's structure and embedded URLs suggest it's designed to lead users to malicious sites.

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 https://netcdn.xyz/app/431946152/free-robux-no-human-verification-generator-game-hack In PDF document text
    • http://pwpyemen.org/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/freecoins_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-with-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_off00004993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4993 30760 bytes
SHA-256: a055f042cea8bf8a79a5f318df307656f62d96ff338ca0ee83f0d72932fd0bc3
font_01_sfnt_off0000907c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907C 18860 bytes
SHA-256: d7f1bf4664d5c073c741d68610eb5dcf28a8fd63084b2bf56aee4ef09f8af4a0

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