Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7408e6286a5ec8…

MALICIOUS

PDF

27.9 KB Created: 2021-07-19 08:20:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f70f2e81378db8778750ef73dbdc55ef SHA-1: fa0ceca4ee52b4b981545af4c95a08d3adfbc884 SHA-256: fc7408e6286a5ec8853bf63a4501b756b80efaf983502a7f72845b167edee715
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, masquerading as a generator or game hack. The document body includes phrases like 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' and a URL pointing to a 'coin-master-hack' PDF, indicating a lure for potentially unwanted or malicious content. The presence of PDF-specific heuristics related to redirects and lures strongly suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0461

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 http://netcdn.tw/app/479516143/minecraft-skins-free-girl-game-hack In PDF document text
    • http://elearning.mtsmanbaulhuda.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D44 22148 bytes
SHA-256: bf8ac6b933191c1f2d647e0e6f3736bdc3761c6f0ee14c0e299461a729916c6c
font_01_sfnt_off00004cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB3 17812 bytes
SHA-256: 7ce5d1bffc067a7697c6659b9f16d2693dfb8cdcb2edfb00fbdf7ce9282af41c

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