Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb93fc2c3c2b2fec…

MALICIOUS

PDF

31.6 KB Created: 2021-05-16 08:02:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a6d596f7d645caab27ccfd5a3687e411 SHA-1: c96be40da860079c89be80427e9f32d238040dd0 SHA-256: cb93fc2c3c2b2fecaa0d232b6de52addfa82394c4fdf000db385d7ca8c87e42d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures related to game hacks and free spins for Coin Master. The document body and embedded links suggest an attempt to drive traffic to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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-heaven-free-spins-today-game-hack In PDF document text
    • http://www.art-concept.gr/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-daily-free-spins_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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BC 27002 bytes
SHA-256: 80bea6138c5a7040c2739996dfbbee86708a4e4743c5531aaff92e0f530aa813

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