Malicious PDF — malware analysis report

Static analysis result for SHA-256 941a77dc094d4e1a…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 07:06:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fd1caec2f4657cedde9c91b0e4353c60 SHA-1: c6a22c0d944451d687a9165abe51fc7e2260c4e8 SHA-256: 941a77dc094d4e1abc93237fa390c4db2adc0df65cc22ba7139e676693cbbf88
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks, indicating a phishing or scam attempt. The heuristic firings confirm the presence of malicious redirector links and a lure for game-related cheats. While no scripts were explicitly extracted, the document's structure and embedded URLs strongly suggest it's designed to lead users to potentially harmful content or further malicious downloads.

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/when-does-john-doe-hack-roblox-game-hack In PDF document text
    • http://new-era.com.tw/image/data/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-and-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/tiktok-free-mockup_GM835599320.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/roblox-jailbreak-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-get-free-diamonds-on-royale-high-roblox-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_off00003138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3138 22576 bytes
SHA-256: 0e5b05899ac7a835886ac004421ae5f9d3fbbda0a3a4bc4df28dfa73fdf57756
font_01_sfnt_off00006372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6372 19356 bytes
SHA-256: ba5f6d17ec2646b60c4b3687bce9b4697cf1c6aa219024492ef84bcdf4c24ee6

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