Malicious PDF — malware analysis report

Static analysis result for SHA-256 12a4a09e4ce68b1e…

MALICIOUS

PDF

40.0 KB Created: 2021-05-20 18:41:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c9c8e12397d52bbc3416a710dc78d23a SHA-1: 3dd84917ed886064555cd9398e29603e80fc931a SHA-256: 12a4a09e4ce68b1e62707e56529be58fbfdb3be84be1307296a0deae21fb6d67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirectors, specifically advertising 'free Roblox generators' or 'hacks'. The document body also contains a prominent call to action for a 'Roblox Generator'. These elements strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8015

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-roblox-svg-game-hack In PDF document text
    • https://amatq.ca/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://amatq.ca/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://amatq.ca/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://amatq.ca/images/buy-robux-free_GM431946152.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_off00003081.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3081 27368 bytes
SHA-256: b4ac62a54ec09edd652522ec05ec89880ba243e665ef3b1fd0a38a217c139b7e
font_01_sfnt_off00006dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFD 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00007aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA4 18348 bytes
SHA-256: ec5774183871ac2310e227d04ff410a8fddd606c61ae0fc98d7f5044e57efae1

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