Malicious PDF — malware analysis report

Static analysis result for SHA-256 2627d2f9ce979dd2…

MALICIOUS

PDF

51.6 KB Created: 2021-06-08 17:58:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5f080d607caef72458c7d70617f3ba97 SHA-1: 9f5859b60983e498cec7ae98353d45393d326426 SHA-256: 2627d2f9ce979dd2f7fa883ab8ac697849c8fdd48b3f9540ecfeaa9fe1917ebc
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links to external websites, many of which are structured as SEO link farms. These links point to pages offering game hacks and cheats, suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

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.tw/app/431946152/free-musket-model-roblox-game-hack PDF link annotation
    • http://killebergsridsport.se/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/rbxdemon_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/hack-one-piece-treasure-roblox_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f25.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F25 25888 bytes
SHA-256: b8c2541ca52f152674ea7b687048281ba81ef9bd84d570d8e1e7df6efc517645
font_01_sfnt_off0000898b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898B 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off0000a5f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F5 18732 bytes
SHA-256: cfd92980701729a1e7b8dddb8079b000ddb1ee79181512c85cba69d95f12f60d

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