Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ddad936e72565f5…

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 10:41:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d3be383b582020bd28f0d8c479776deb SHA-1: e0358aafc64f84beecb38d5ad59e043c4b5e7b19 SHA-256: 7ddad936e72565f575200e29b10bdd0b7b406741b6b5168ab09acc390d73b3f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator' and 'game hack' lures. The primary link directs to a URL associated with a coin master free spins scam. While no scripts were extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or scamming attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • 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.
  • 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.online/app/406889139/coin-master-daily-free-spins-link-today-blog-game-hack In PDF document text
    • http://librarystkippgribl.com//repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-a_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/robux-survey_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-spin-hack-no-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005134.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5134 26048 bytes
SHA-256: 1e53dafd564bd5fe2950fdeb9e03a1f2f2361a072731bbe096b6b2d2f380b78c
font_01_sfnt_off00008c48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C48 3248 bytes
SHA-256: 2bb7f4bc622c92f17fac2258efa0d979c6ce95d7e079932511e12b0c9adca368
font_02_sfnt_off00009784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9784 19156 bytes
SHA-256: c6e44e2d9e69c9765448dadb9ef0e8fe599e3907f261bb989cdf753410e037ff

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