Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b256db71615b60…

MALICIOUS

PDF

46.2 KB Created: 2020-09-06 07:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66f6560b6b92e488f55331aec62a41cc SHA-1: eab5a19a5be830f254dd86de84c68fb0657625ca SHA-256: 60b256db71615b604c3ac15e0768e92a1f528428ddcfb61b9eda1ed984234782
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a malicious redirector link disguised as an 'Introspective report example'. It also exhibits characteristics of a PDF SEO link farm, embedding numerous links to external PDFs, with one leading to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.link/wix?keyword=introspective+report+example
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/16895166630.pdf
    • https://cdn.shopify.com/s/files/1/0435/9729/9869/files/blush_colored_bed_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6839/files/ropedevubujorivedomitax.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8890/files/solis_10kw_inverter_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/catedral_de_beauvais.pdf
    • https://cdn.shopify.com/s/files/1/0432/3265/7568/files/wulorenonaf.pdf
    • https://static.usrfiles.com/ugd/a13bc2_15e8ad0509b94fd68ad2a634e77995ba.pdf
    • https://static.usrfiles.com/ugd/ae059d_d6b8b3c878f14fed821a9614f85fd0e4.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_b78c7acb593e452f8d22695a345eedcb.pdf
    • https://static.usrfiles.com/ugd/808cd0_8861529d9c084ce9bcae588f2bb4e418.pdf
    • https://static.usrfiles.com/ugd/0c4177_6d4a1c628ddd481f95433c06d9d84ca2.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/85274844215.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/mivowoboxesoliv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/46012191271.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a27.bin
76322f74a05e7c5cd37cf9273723e6c7809bca1c54ce9d4d9c5f62b714939132
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A27 4932 bytes
font_01_sfnt_off00007acd.bin
8a876b7758f206978754e583aab6615cda1ec5758f258e2e38458c0285a2887f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACD 10356 bytes
font_02_sfnt_off00009e15.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E15 4324 bytes