Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f8e895144ffffc…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 18:31:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 48aa33dc1329f106f3915378355ca753 SHA-1: 717af609a76a915dfa909fd7dacaf359d41c88e4 SHA-256: 26f8e895144ffffc20b0e4ee4747c39699cf5149986a62279ec459402c03e9d1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body and embedded artifacts also contain the malicious URL. This indicates a phishing attempt to trick users into visiting a malicious site, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

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-free-spins-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000340d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x340D 24512 bytes
SHA-256: 004d98efdf70150ac6b5a0f0598147081a566f91d989e238413d391cc789b41b
font_01_sfnt_off00006b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B88 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00007929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7929 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00008319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8319 19212 bytes
SHA-256: ea2ccea76d1f571611d10c4b01070d88fcd3b5b7afd5bc625fc8c7f39c81b3f3

Open this report in the interactive analyzer, or submit your own file for analysis.