Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd06cfe08badc53d…

MALICIOUS

PDF

47.6 KB Created: 2020-09-10 23:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce63b0ca3a9b34d3b423115753741d8d SHA-1: 0c38e6273caf0a22a20f8ce020760e0950ac483d SHA-256: dd06cfe08badc53d275ddb5cd1806428142ca0e9407616080f2f355647b48785
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same URL and references a 'character sheet', suggesting a lure. The ML classifier also strongly indicated maliciousness.

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.me/wix?keyword=prowlers+and+paragons+character+sheet
    • https://static.usrfiles.com/ugd/b8c837_1c6cfa7d984a4ac385406df5d41039e9.pdf
    • https://static.usrfiles.com/ugd/71fd01_b240f486065b449b8b098d8c441334a4.pdf
    • https://static.usrfiles.com/ugd/c0518c_341d8db4aeb847acb7cf34a53c0d9e45.pdf
    • https://static.usrfiles.com/ugd/c1108c_a882019ffb084d81a75566c665fb2833.pdf
    • https://static.usrfiles.com/ugd/b8c837_a84918c81c784b88a640d33f38f09a31.pdf
    • https://static.usrfiles.com/ugd/9e41f0_66317341ce4646c9a92a4a28f9260435.pdf
    • https://static.usrfiles.com/ugd/b8c837_3279adcd308141108f647b98d0b30610.pdf
    • https://static.usrfiles.com/ugd/b98abb_09d2a0dd706549d69183f424bfd24b04.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/37016879894.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/rerale.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/16744216690.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/75527076585.pdf
    • https://cdn.shopify.com/s/files/1/0435/5260/4328/files/foraniferemisijigumoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/lidarasilinujudesubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/58859820164.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_off00006f81.bin
fecccd7ff7e001d5c3ac8269ab4fe7f8bc14074ba81831c149f74b5042b72033
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F81 5168 bytes
font_01_sfnt_off00008116.bin
a71fa54fcdf16b527f2f1d4eee497085ff779abe739b58cb2f90847ce3f79406
pdf-font-stream PDF embedded font (sfnt) at offset 0x8116 10044 bytes
font_02_sfnt_off0000a36a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA36A 4324 bytes