Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a83d3ee13e40e22…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 07:57:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b3d8f12e814a6f61dc24250730a87f19 SHA-1: 096f207bd21db1b849bbbb1a56dbe64a9d02aadf SHA-256: 3a83d3ee13e40e2260ec0e187c597616eb38c110747d6150a5e7c5d82590c5fb
122 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are SEO-optimized slugs pointing to game-related cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm designed to redirect users to potentially malicious sites or phishing pages. The document body, though heavily corrupted, contains references to game hacks and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/how-free-catalog-roblox-game-hack PDF link annotation
    • http://www.gadanie.lv/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-robux-redeem-code_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/roblox-rust-free_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-roblox-accounts-obc-lifetime_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-followers-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-coin-spin-coin-master_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_off0000301f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301F 23124 bytes
SHA-256: 0ba9e8a01ce39c73ef17fe5277de613b967d9feddd78d5ec8269b7fbd7f558c4
font_01_sfnt_off00006438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6438 18920 bytes
SHA-256: 12826889c973127c1897dc8e451cb13a277aeeac3817a3b01f1c85ef5a4e69d5

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