Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c2b7047330a230…

MALICIOUS

PDF

41.7 KB Created: 2021-05-14 02:03:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19589ff3668dd78989f5b1356d71a18c SHA-1: 297292941b8c3dd7ee8b8737052f89763d7a043c SHA-256: c1c2b7047330a2302633c01cef9c443b85952acb5552af61b35a96a524034810
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generator / game hack' lures. The ML classifier also strongly indicated maliciousness. The embedded links likely lead to further stages of attack, such as malware downloads or phishing pages, masquerading as game-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/free-robux-no-offers-game-hack In PDF document text
    • http://progressgel.ru/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://progressgel.ru/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://progressgel.ru/images/coin-master-free-spins-and-coins-2021_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_off000047ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47CE 24828 bytes
SHA-256: 26cb9487229254f6aa23d1a04c8b91885fa5d4b82dc394436f3e46ad71e39f09
font_01_sfnt_off00008171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8171 18012 bytes
SHA-256: db6be32425767485114cb9000642ed63280f0807e0fe45793765b8e181fce2c0

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