Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c0b3503eac3868…

MALICIOUS

PDF

37.4 KB Created: 2021-05-22 07:14:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7c26634af3615085108f2dac09ee5a61 SHA-1: dea0b25092b2f28adc356ce7eb624cc61610a80a SHA-256: a3c0b3503eac38685d43730cd868ce188721dde386f9507d4d67f29e7014b4ff
160 Risk Score

Malware Insights

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

The PDF contains multiple links and a call-to-action phrase, directing users to websites offering game hacks and generators. These links lead to known malicious redirector infrastructure, indicating a phishing or scam attempt. The document body and heuristics suggest the primary goal is to lure users into clicking these links, likely to download further malware or engage in fraudulent activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/406889139/coin-master-15-free-spin-link-of-last-5-days-game-hack In PDF document text
    • http://www.copoint.co.uk/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.copoint.co.uk/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.copoint.co.uk/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.copoint.co.uk/images/minecraft-sign-up-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33D8 26156 bytes
SHA-256: ba57710ba045a4f9c006efcd17aa50238a0b9b3020c043ae8377a430a29535d0
font_01_sfnt_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 18644 bytes
SHA-256: 4144dbe1534d0325d37e4c6129895ddb34a2bc26123e242025982d4ceef1bd2b

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