Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd3feda045342fa…

MALICIOUS

PDF

53.8 KB Created: 2021-06-04 02:47:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: addb31ae5073c94ba8aa5d1641ef05b5 SHA-1: d7aa0d5b61fbd7778d0f74b6c468af39fb92e602 SHA-256: bdd3feda045342fa64a7ffb6d2167b6131c9c181cec3b33de038c727af246684
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which appear to be SEO-optimized lures for free in-game currency or accounts. The presence of a malicious ML classification and numerous links to potentially untrusted domains suggests an attempt to direct users to phishing or scam pages. No scripts were extracted, but the document's structure and embedded links indicate a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

Heuristics 4

  • 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.
  • 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.online/app/431946152/theres-no-way-of-getting-free-robux-game-hack
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-download_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/daily-spin-coin-master-free_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/getrobux-come_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-50_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/get-coin-master-cards-free_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-112-hacked-client_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/cool-free-minecraft-skins_GM479516143.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/without-tiktok-free-fire_GM835599320.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000055ca.bin
333230992aa2ff8bdbc4268fdbd373ca4480cd49415878771fce65a270d6c167		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55CA 25860 bytes
font_01_sfnt_off00009212.bin
092b7a11ef2af93d0b61b37032e6f669359ea7bc5bcb682d43a712f599a5ca39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9212 8376 bytes
font_02_sfnt_off0000ace0.bin
ffde4cd46852abdd7bbf3832a64c2ab60ac9bb048cf21ea4c9ea45af47fccd3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACE0 19300 bytes

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