Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94c343b0028c74b…

MALICIOUS

PDF

36.2 KB Created: 2021-05-15 11:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e01d6ce8d3856bb64c5771301f633ef9 SHA-1: 50530cc7a1f22268f18173e1a6afa6488cbde943 SHA-256: d94c343b0028c74b963834a24a24ad4d81e59b104886d888279e684f51cbbaff
170 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to a malicious domain, masquerading as a 'free generator / game hack' lure. It impersonates the Apple brand to trick users into clicking the malicious link, which is a common credential phishing tactic. The document body explicitly mentions 'Free Robux Hacks No Verification' and a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', further reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0302

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/free-robux-hacks-no-verification-game-hack.
  • 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-robux-hacks-no-verification-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003306.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3306 24380 bytes
SHA-256: 0cda5728ea292754455441f844d271cf04acd6b107068642842294b0a1fa537b
font_01_sfnt_off00006ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB1 18772 bytes
SHA-256: addbd32849de550f6a3cbf56c70cbffa7cf804e2f09d57d2f784457513eafccd

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