Malicious PDF — malware analysis report

Static analysis result for SHA-256 18aa3231ca0903c6…

MALICIOUS

PDF

38.0 KB Created: 2021-05-23 08:51:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bee96d07d0fc9c2352af2a3126974a7f SHA-1: 91cdcd8edde70cc2662bd1c2b5c443bff0c70a29 SHA-256: 18aa3231ca0903c6400b429d4b54289ff8c16281c4c3df0cbec86a4a41632811
170 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a lure for a game hack or generator, linking to known malicious redirector infrastructure. It also contains instructions consistent with social engineering attacks that trick users into running commands, suggesting an attempt to bypass security measures and execute a payload. The embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0076

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/how-to-get-minecraft-pe-for-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_002_off00003028.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3028 24916 bytes
SHA-256: e1ad18b7f4fdee02a64baa5c0d1ccc74f738c46fb54894570fe9b68984c70de4
font_01_sfnt_off00006917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 3252 bytes
SHA-256: 2ee6c90e08a3bb15861793471ac54363ba574c0b7325e311faaacd1259e88089
font_02_sfnt_off00007456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7456 18028 bytes
SHA-256: 3ed4cc32a3614fc42f77637b5226aac8e96d41a1bdab71d116d218547dfdfc35

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