Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d982eac5659fd3…

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 18:18:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ec7f3232662c43127d830c8dbf3e0b30 SHA-1: 1a17da6738a4e29a4f5042a4ee96221b6781733b SHA-256: b3d982eac5659fd3bf99793bf9759dbcd73f817825e2ca6dfc31ef5078dca057
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a malicious redirector, which is designed to lure users into downloading potentially unwanted or malicious software by promising free game hacks and currency. The document body and heuristics strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment. No scripts were extracted from this sample.

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.tw/app/479516143/minecraft-java-edition-free-download-for-android-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/best-way-to-make-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/pubg-uc-nasl-alnr_GM1330123889.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-game-shut-down-cheat-engine_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/hack-roblox-jailbreack_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-in-cheat-ingine_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spins-for-coin-master_GM406889139.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_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 21988 bytes
SHA-256: 762a2a9b57ce91d7400d1c00048eb57820f39120ad769d2c996d6e9b0d62e8d2
font_01_sfnt_off000060cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 18856 bytes
SHA-256: c43022659d2334bb80aa9650c1d831b37683b3bffb68bd4d8ca36e01fa2f38bf

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