Malicious PDF — malware analysis report

Static analysis result for SHA-256 db52a0cda2838932…

MALICIOUS

PDF

40.6 KB Created: 2021-05-22 08:08:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a995854a4494c73fd048e9a17571d5eb SHA-1: ab5fb97789487ba4ae53de8c529f5455bde61eaf SHA-256: db52a0cda2838932d5330dfc313475d058af086265c1cec30778a0c8b326c865
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, specifically advertising 'free ways to get Robux' and 'game hacks'. These links likely lead to the download of malware or further phishing attempts. The ML classifier also flagged this PDF as malicious, supporting the conclusion that it is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7776

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/free-ways-to-get-robux-game-hack In PDF document text
    • http://ilifemarket.ru/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://ilifemarket.ru/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://ilifemarket.ru/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://ilifemarket.ru/images/minecraft-free-ios-2021_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000318a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318A 28136 bytes
SHA-256: 627a8359e33a5b50626c164832e3a969a136e97fc850ff0f91c61bcfbd9749d1
font_01_sfnt_off0000720a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBB 18724 bytes
SHA-256: 4748f019d46a9554f00c7c8cf9bb59ec204dfb95bc520e2d25b5a7c8ef81b270

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