Malicious PDF — malware analysis report

Static analysis result for SHA-256 072b5fee30ea72c1…

MALICIOUS

PDF

37.0 KB Created: 2021-05-23 07:21:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 27b4c60369f7afc5805bb55388b40c5e SHA-1: a142fc3c3f437ae936c06ffb63188aa3f83231ef SHA-256: 072b5fee30ea72c185000879126ce3e27c46eda555bca3e4a1719f56f0b8d9ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded artifacts suggest a lure for 'Coin Master' game cheats, which redirects to a URL that hosts further malicious PDFs. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-blogspot-game-hack In PDF document text
    • http://nod74.ru/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://nod74.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://nod74.ru/images/coin-master-200-spin-link_GM406889139.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000350f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x350F 25344 bytes
SHA-256: 7070aade1c5d84278c262839e748b598d7fb698da8af433227cc1d4b7190107e
font_01_sfnt_off00006ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED4 18464 bytes
SHA-256: 3d1506adb004325b5ad849f11167115e1f90dbd1428f7e6d98779d75984a0c30

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