Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64eecf0b54c6c12…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 13:32:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3009bf8a4fc1962e9e3d8fd1119970d7 SHA-1: dee8547a0859beddcc320f29c61c3957f77d3086 SHA-256: a64eecf0b54c6c127f30b481165014fdb7be46ec2adf2919fa77ecb1f87e4254
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically a lure for a "free generator / game hack". The embedded URL leads to a known malicious domain. While no scripts were explicitly extracted, the PDF structure and embedded content suggest an attempt to trick the user into visiting a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000352f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x352F 30304 bytes
SHA-256: 8838272e7d2d98fbf05d9b73757b905ccfb1ca8aa56179183865767f706b5cd3
font_01_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 4000 bytes
SHA-256: 752a393508879ce2c082f4a068233f851dd811888cfa25db968aacc78f215163
font_02_sfnt_off0000835e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835E 17884 bytes
SHA-256: 2acdf213e8e807bc487a80aadd43e8577e55ab076d243b65afc8816f4882cfa2

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