Malicious PDF — malware analysis report

Static analysis result for SHA-256 54655b1edaaa1739…

MALICIOUS

PDF

39.0 KB Created: 2021-05-22 01:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 234904c976373ee04bcd563263978e72 SHA-1: ea7fd66b2804b491c0a9b3ce506d1828d399643f SHA-256: 54655b1edaaa1739f2ca5120b41d9f906295533985eb0ad2956f42baff819165
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators. The document body includes phrases like 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' and directs users to download links. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks, indicating a social engineering attempt to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/479516143/minecraft-mac-free-game-hack In PDF document text
    • http://logisticgroup.co/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://logisticgroup.co/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://logisticgroup.co/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://logisticgroup.co/images/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000342d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x342D 26044 bytes
SHA-256: 2f35e30ec46393997aeb9551e6a0599ba0272ec2df050ada2f78645d4d71c335
font_01_sfnt_off00006f68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F68 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00007908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7908 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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