Malicious PDF — malware analysis report

Static analysis result for SHA-256 30fb2fab017c7e17…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 11:54:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 23c67edcb968b78cfaeb1b3e9a1ee386 SHA-1: 4936bac6cecfb04160b42627506048fe8f37e2dc SHA-256: 30fb2fab017c7e17b665dd1aebd4afff1a13c2c562f6755b5354f3926ba18154
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/how-to-hack-coin-master-with-lucky-patcher-game-hack PDF link annotation
    • http://greasley.website/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.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_off0000458d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x458D 24768 bytes
SHA-256: e4e537bf4351499570aa68ed36ae5eadfda77f08a60136fad2aa97566baf5af3
font_01_sfnt_off00007e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 18720 bytes
SHA-256: 34d75f097297ed1589fbb05f13100ff3c6eb1e0ee8c8ab2f5ab039955987b94a

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