Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6631cb379f4b6ad…

MALICIOUS

PDF

35.3 KB Created: 2021-06-23 01:43:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 649198f29dbc1abcfd7a47af2f63c35c SHA-1: 4dffd19e73cef08295e89850aee71ad7d295dc9e SHA-256: a6631cb379f4b6ade24e474df5d0c58450b0239396f63fa771454291959c869e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs and a "link farm" structure, strongly suggesting it is designed to redirect users to malicious sites. The document body and embedded links focus on obtaining free in-game currency or hacks, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF with high confidence.

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.co/app/431946152/hey-google-how-do-you-get-free-robux-game-hack PDF link annotation
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-btool-command-without-hacks_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-free-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://man2pamekasan.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.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_off000031a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A7 22328 bytes
SHA-256: ecc792010f89e02f708191ac6778dc76d0e0b6e786940361329cc198a1c4d33c
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 19568 bytes
SHA-256: c947cb9e4153dfb2ea198cd701ec4d5f338e29feb7802fd2debd87897cec7901

Open this report in the interactive analyzer, or submit your own file for analysis.