Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab486a4421b468c…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 18:56:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: db7fade0c0e20c84b5b14d721f755a2b SHA-1: 6ae05c8c279c9bd4f0508790b8ca5dfaa465bdfd SHA-256: fab486a4421b468cca166912fa17621d56098e01244c9dad772fbd023ccef0f7
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF gateways for game-related cheats and hacks. The presence of a "download button" lure and a "payment redirection" lure suggests a deceptive workflow aimed at tricking users into downloading malicious files or engaging in fraudulent activities. The ML classifier strongly indicated maliciousness, and the overall structure points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.xyz/app/431946152/original-roblox-game-hack
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-meme_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-hack-8-ball-pool_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-tiradas-gratis_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-download_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-free-gift-cards_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-twitter-free-spins_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-hacked-version_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-roblox-card_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-1-ga_GM406889139.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-free-download_GM479516143.pdf
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cac.bin
bae8f3272cf79ae0737347d7423c4ef1bec4a22480055a38f718180f1445aecc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAC 25008 bytes
font_01_sfnt_off00008678.bin
07637e756c9e476f76e6aac07d93055443532b6fc7e48bcbb320a9c3212a4919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8678 18420 bytes

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