Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67801fbbbba548e…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 10:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 04490506db80d2999c420267a58caf8a SHA-1: 0b1fa27424262315db9c69442dc6ea8e6f97d969 SHA-256: f67801fbbbba548ea6bb00e9cf538a119d3409bc204e4b66eda9dec323b0bac8
130 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The document body and metadata indicate it's a lure for free game mods, likely intended to trick users into downloading malware or visiting further malicious sites. The presence of embedded URLs and the nature of the lure suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

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/free-minecraft-mods-for-xbox-one-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_002_off00003043.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3043 31136 bytes
SHA-256: d623d38ddcca3983898e22b6756ea061a590c4a1e2403a239e689f59c7464669
font_01_sfnt_off00006f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1A 18480 bytes
SHA-256: 3034162bb212f750d30f3b083c49397834114f606ecb661b66a42b1e278b7a45

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