Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e49743184ae13d…

MALICIOUS

PDF

50.2 KB Created: 2021-05-11 22:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e625d8e7e515dd2d3186f63dc11a2ce8 SHA-1: 7047508e5fe7ebcd2d8be52c37a89765e4bc2ac7 SHA-256: 75e49743184ae13d3845711a952ed3116e9c1387679e33adcd8fe1bea12ec452
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and cheats, with one primary URL identified as a malicious redirector. The document body and embedded links suggest a lure to download or access potentially unwanted or malicious content. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/coin-master-lucky-patcher-hack-game-hack In PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/wurst_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/xray-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004be8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE8 24988 bytes
SHA-256: 44ae49aa8aece67e3d44e41e5bfc3f4db9ff93fbe3330f6fe1b62cc82f409b63
font_01_sfnt_off00008596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8596 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7C 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_03_sfnt_off0000a195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA195 18356 bytes
SHA-256: 48d2456a70e0b436a66ea7754c0c12eb0fff45cce4d0a828759cadba1e6f893b

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