Malicious PDF — malware analysis report

Static analysis result for SHA-256 74f1734c9ee4d1a0…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 21:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5c76c41715b6922d772c67ad1b84f411 SHA-1: 8d00133ee2ef13bf66a0d063a2bd2c8c164372cd SHA-256: 74f1734c9ee4d1a05220910c4c51d906fbf437ad821a6ada929cb7b756dd8a03
142 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. 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 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/406889139/hack-free-spin-coin-master-game-hack PDF link annotation
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • https://min2mojokerto.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 24500 bytes
SHA-256: 00e6a0636365e7c1ee90e0dcbdf056226c9f7f71ace106c9bacde94d81ea1bda
font_01_sfnt_off00008191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 18056 bytes
SHA-256: 6e419222a3f00e097ec5a4796a0d55da2a670d2aa1bcbb1aaa1cf298b26301b5

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