Malicious PDF — malware analysis report

Static analysis result for SHA-256 3378c648a3620df9…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 23:36:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 555e2a2256c76405bd4948d6604a348f SHA-1: a8228c788d67440f0db52ef46663cd81ff1ad815 SHA-256: 3378c648a3620df9745b54586851d46cd9285c95e033a125b31e9672ee3b688c
142 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites that promise game hacks and free in-game currency, indicating a scam or phishing attempt. The ML classifier strongly supports the malicious nature of this PDF. The document body and heuristics confirm the lure is related to game cheats and generators.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/1094591345/pokemon-go-basic-vs-premium-rewards-game-hack PDF link annotation
    • http://www.inoxograde.hr/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-minecraft-java-edition-codes_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_off000046f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F5 25160 bytes
SHA-256: 75bc583904f75bf2a4a8ef9cc2ee147dbfb4d4dc096599a8f932dafe41a56c8d
font_01_sfnt_off000080a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 18856 bytes
SHA-256: a67a006a5ec9164e065a5d3b33327ec991c4118ffaa7e80d16b485837c23d338

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