Malicious PDF — malware analysis report

Static analysis result for SHA-256 60dfd5cfd99a9d7c…

MALICIOUS

PDF

38.4 KB Created: 2021-05-11 16:05:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a45ef64c4b92e4735641bf1a71c48d77 SHA-1: 4df00cc7e1c3fbc01ab274ed1096b6e19e68c45b SHA-256: 60dfd5cfd99a9d7cb892ee6d33ff729a1a036c6d875e2a7567f959b748f10585
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'game hack generator'. The document body and metadata also contain references to the malicious URL, indicating a clear attempt to trick the user into visiting a potentially harmful site. No scripts were extracted, but the presence of malicious links strongly suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/minecraft-game-hack In 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_003_off0000343d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343D 24856 bytes
SHA-256: ebb7e028e3fc400061e303654e900ba793752c4327cbcdd9049f2c82c783c7d5
font_01_sfnt_off00006caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 17568 bytes
SHA-256: ce96ee2cb1800a95c911c77dfe81c9a72a479049c6676c05affe2ae793ebac2d

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