Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c3f3cf1bd77fd4…

MALICIOUS

PDF

57.0 KB Created: 2020-08-22 00:54:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ca22631a582284017fd14ce20bd22c0 SHA-1: 43c879988b341038c49e61c8e0136a369d2b6b23 SHA-256: 27c3f3cf1bd77fd4b46bb66e430908dc839fed5962cc6c0594c954f906d43b14
154 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector, specifically mentioning 'minecraft kill aura hack' in the URL. This indicates a lure to entice users to click the link. The PDF also functions as a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ttraff.com/pify?keyword=minecraft+kill+aura+hack
    • http://bawesed.courtrobertarts.co.uk/uploads/1/3/1/3/131382406/ponikal_wegorofowuke_nonupitiguwone.pdf
    • http://files.dirafoundation.com/uploads/1/3/0/8/130874205/dokaxidelife.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/wipazimoburer.pdf
    • https://cdn.shopify.com/s/files/1/0430/6219/8425/files/minemijip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/90036364320.pdf
    • https://cdn.shopify.com/s/files/1/0435/5289/9231/files/96737687092.pdf
    • https://cdn.shopify.com/s/files/1/0439/4414/9150/files/65388148093.pdf
    • https://cdn.shopify.com/s/files/1/0464/5198/2504/files/clarks_desert_boot_fit_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/find_font_in.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/mobile_test_automation_with_appium_nishant_verma_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009553.bin
78b8f33f203ab5fb9a0a3ede0c702f43fec404a582142e903a381451b0138b6b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9553 4632 bytes
font_01_sfnt_off0000a500.bin
757b7a11be10843fd2b10f0b876308bf25b2093a0c573035f0118c2a9c913778
pdf-font-stream PDF embedded font (sfnt) at offset 0xA500 10668 bytes
font_02_sfnt_off0000c96d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xC96D 4324 bytes