Malicious PDF — malware analysis report

Static analysis result for SHA-256 6314629006d3c84a…

MALICIOUS

PDF

41.2 KB Created: 2021-05-20 00:38:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 20e2ba8c6d84af83bf0f1c9b8531541f SHA-1: 5d3a2aee899a0f8439fc52aee24f551146ff6800 SHA-256: 6314629006d3c84a733078fe10b4a14b5c61fafae5ca7b2f97a403c767e87bcd
240 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple links to external websites, including a known malicious redirector, masquerading as game hacks and generators. The document body, though heavily obfuscated, contains references to 'Roblox Hack' and a URL associated with malicious activity. The presence of numerous SEO-optimized PDF links suggests a campaign to drive traffic to potentially malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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.
  • 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
  • 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/roblox-hack-ga-game-hack In PDF document text
    • http://artcustomdrums.com/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://artcustomdrums.com/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://artcustomdrums.com/images/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artcustomdrums.com/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://artcustomdrums.com/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://artcustomdrums.com/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://artcustomdrums.com/images/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://artcustomdrums.com/images/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004774.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4774 24212 bytes
SHA-256: 639564d2ce329e40a331577fd4f9a7de11b8c923e09b718ad76eb3dc5ef51fee
font_01_sfnt_off00007ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 18184 bytes
SHA-256: 3275d650180bfb45a9fb7d5756aac43dcbbafe87c7818dab7a1b2e1f44194404

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