Malicious PDF — malware analysis report

Static analysis result for SHA-256 230c592845bd21fe…

MALICIOUS

PDF

33.6 KB Created: 2021-06-25 20:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 816ca46ed818670a9f8d6674bb30235c SHA-1: 31628307f26290ada67d428f5714dd1a289fbb00 SHA-256: 230c592845bd21fe9b4228ee927eed73e16c4d0f965f6396fbc3ec8ce0204e76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body text and heuristics indicate a lure for users seeking cheats or free in-game currency, which is a common social engineering tactic. Although no scripts were extracted, the presence of malicious redirector links strongly suggests the document is designed to lead users to potentially harmful websites.

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/cheat-undetectetble-roblox-game-hack In PDF document text
    • https://jas8.com.tw/image/data/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/dooms-pike-brickbattle-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/cheats-in-wolves-life-3-roblox_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/how-to-get-free-hair-roblox-2021_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/all-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/how-to-get-free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/pokemon-go-free-legendary-pokemon_GM1094591345.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-robux-codes-wiki_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
font_00_sfnt_off00002c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8A 22504 bytes
SHA-256: b7135c965bfa5d7a54823bd898003bcf21b4c037e63aa522cc0a92738d96b07a
font_01_sfnt_off00005ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAD 18932 bytes
SHA-256: fc61731aba911d3e132482976dfb7d47c7085c638983d448d57c81aa10306ea9

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