Malicious PDF — malware analysis report

Static analysis result for SHA-256 44720684a1da1f4c…

MALICIOUS

PDF

39.0 KB Created: 2021-05-13 04:15:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 977822dadafd9adff2704b7c1b81b98a SHA-1: 71b7362a26695ef780e2a1a0a0ef170e9e34a169 SHA-256: 44720684a1da1f4cc901d7a4bfb117772a710cc443ed26a79b40223993695c62
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free Minecraft Mods' generator, which is a common tactic for tricking users into visiting malicious sites. The embedded link redirects to known malicious infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or lead users to a malicious download.

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/free-minecraft-mods-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_off00003528.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3528 25240 bytes
SHA-256: 6c79c90a9073344365bef8f3fc5b8c7c81dc8fbbcb3fc03cf00ed2a072d40543
font_01_sfnt_off00006e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00007818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7818 17884 bytes
SHA-256: adaa6c4c94b3243dd254ffbddf76305537cf905bb6459c29a6343236798c761b

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