Malicious PDF — malware analysis report

Static analysis result for SHA-256 02aa7ebd4575133e…

MALICIOUS

PDF

36.0 KB Created: 2021-05-21 01:42:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f6d3c0c03238b890ea375d5ff0f93e12 SHA-1: 08760eb4264088390334d8ae34eb78ac7a21230d SHA-256: 02aa7ebd4575133ea1214cbb8fb0a1b9833e50a708905d5b4169258bb93c3723
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to what appears to be a lure for free game hacks, specifically targeting Roblox and Coin Master. One of these links, https://netcdn.xyz/app/431946152/roblox-dominus-free-game-hack, is flagged as a known malicious redirector. The document body also contains a call-to-action phrase, suggesting an attempt to trick the user into clicking the malicious link. No scripts were extracted, but the presence of malicious redirectors and lure content indicates a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/roblox-dominus-free-game-hack In PDF document text
    • http://www.biochemix.com/uploaded_files/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.biochemix.com/uploaded_files/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-promo-code-2021_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
stream_002_off000031e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E2 24908 bytes
SHA-256: 04ab12afc40f4a75c8c49f6b172b2f85744bd091c4db105bfe6aedbcd6002ead
font_01_sfnt_off00006a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A73 18636 bytes
SHA-256: 091f137b67372388e813b4829387741adcd96f5962df99b77f49d4626ee6ae86

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