Malicious PDF — malware analysis report

Static analysis result for SHA-256 482ced152e565664…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 23:55:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dbcf1ff21070d6864506484128833aa9 SHA-1: f1ab0855c336b1b7a060266b23383c10a15e309c SHA-256: 482ced152e565664a9be0473412cfa19df53a58c57d724314ce0839489d6c29f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a "PDF_SEO_LINK_FARM" heuristic, pointing to websites offering game cheats and freebies. The ML classifier also flagged this PDF as malicious. The document body explicitly mentions "Free Spins Coin Master Links" and "hack" related content, indicating a lure to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coin-master-links-game-hack PDF link annotation
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-hack-other-players-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-dinosaur-simulator-dna-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-aimbot-hack-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-robux-from-surveys_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-gte-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-do-you-get-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-pet-simulator-lua-script-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-no-download-free-play_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-robux-gift-card-gieaway_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/itsmerade-best-roblox-free-level-7-executor_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-lumber-tycoon-2-money-hack-script_GM431946152.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
font_00_sfnt_off000031e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E7 22568 bytes
SHA-256: 515c790379961ceecfa1a425580abc7c99cc0ee3a1b791eaad80cdc0b89df157
font_01_sfnt_off0000644d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644D 18344 bytes
SHA-256: bbd45a100c9fda56c98402c01c945e99ba5b23a8a144929349c4b2a582275d64

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