Malicious PDF — malware analysis report

Static analysis result for SHA-256 4214ecd699343fbb…

MALICIOUS

PDF

42.8 KB Created: 2021-05-15 17:26:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2f50be77da2a1a38f05721fc1ddfefda SHA-1: ccff3e4c15605c26c950a1c68f10fe8bb9064847 SHA-256: 4214ecd699343fbb88ce16ea88954879f22df567f4390f5be9645ad5223c4ca1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links designed to lure users with promises of free Robux and game hacks. These links redirect to malicious infrastructure, specifically identified as a known malicious redirector. The document body, though partially corrupted, contains text related to these lures and the primary redirect URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/431946152/free-robux-youtube-game-hack In PDF document text
    • http://innovativefs.co.uk/images/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/114-hacks_GM479516143.pdfIn PDF document text
    • http://innovativefs.co.uk/images/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/earn-robux-websites_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/login-robux_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://innovativefs.co.uk/images/coin-master-free-spins-daily_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_003_off00004871.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4871 27880 bytes
SHA-256: f0bce9bd4595eb7deb7f1aaa69de680477b75b22ac1c9b3d13a52504839147e8
font_01_sfnt_off0000875d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x875D 18280 bytes
SHA-256: de5b074060e7ee0fa0230ac6212805924cd4a5679e09505111534b28358c176b

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