Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ecd97b73885ea3b…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 06:07:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: eaca4f1be26af5c610a4480e76320f6b SHA-1: 72d0232626362fa8684bc42489eed2d5a900fad2 SHA-256: 0ecd97b73885ea3bf955c91666ed8da598284cb07c43a9d2406af4ae6a18175a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as Robux. These links are flagged as malicious redirectors, indicating a high likelihood of leading to phishing pages or malware downloads. The document body and embedded URLs strongly suggest a lure for users seeking cheats or free items, a common tactic for distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-get-free-robux-on-pc-game-hack In PDF document text
    • https://kalendarite.eu/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://kalendarite.eu/images/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://kalendarite.eu/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kalendarite.eu/images/free-robux-with-no-verification_GM431946152.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_003_off00004b0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0B 26464 bytes
SHA-256: a4e681c324ca0c7b4c66d3fee2ab223981ff4c4d3ea00ea8f80a5e5fc0986f20
font_01_sfnt_off0000868b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868B 18436 bytes
SHA-256: 3da4067756d8a9659bbf1d91e8f5987ff560a340f178cc4f41ff3c3676747205

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