Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad4bdf4ba5f6409…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 09:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dac0519d2929c55c5ec2acca182d0b01 SHA-1: d3fe6133410526a6ed028f2a7c746b251a3ec8ac SHA-256: 3ad4bdf4ba5f6409112749af87db0d70d814d6a721842bba09c242a016e4dd56
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for free in-game currency or hacks, directing the user to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures reinforces the social engineering aspect. The primary IOC is the redirect URL which likely leads to a further stage of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-verify-2021-game-hack PDF link annotation
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-support_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.vsi.esdm.go.id/katalog/slims7_cendana-master/repository/minecraft-realms-free-trial_GM479516143.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_off00004d1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1E 24728 bytes
SHA-256: c3e3be950b424ab44717a7f171f6e7f26485fff4b4cd41d5cfecccd4b2d820df
font_01_sfnt_off00008617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8617 18848 bytes
SHA-256: 9f147bd5bf62c652754f553854fad05fac0b8df637ce3021f80b740c61e7be7f

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