Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d22d8a367b9c062…

MALICIOUS

PDF

51.8 KB Created: 2020-09-01 22:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 368e107d019c9f030808c66d4c795696 SHA-1: a2f457baa993205fad5a67e752c44fcc21e4ac48 SHA-256: 0d22d8a367b9c062773287f8ca5e55b2765c63604d88166dced013c9eb25d9c9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm and a direct link to a known malicious redirector. The primary malicious link is https://ttraff.ru/wix?keyword=metal+gear+solid+survive+trophy+guide, which is likely used to direct users to further malicious content. The document also contains numerous links to PDFs hosted on Shopify, which are likely part of a SEO link farm to improve search engine ranking for malicious content.

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.ru/wix?keyword=metal+gear+solid+survive+trophy+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/55228627508.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/xobomezawudumenuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6572/files/design_company_presentation.pdf
    • https://cdn.shopify.com/s/files/1/0429/5386/7427/files/11773157911.pdf
    • https://cdn.shopify.com/s/files/1/0459/0714/8954/files/luigi_s_mansion_3_guide_7f.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/computer_hardware_and_software.pdf
    • https://static.usrfiles.com/ugd/b8c837_9690b3e34f7743159963d5027f40e0e5.pdf
    • https://static.usrfiles.com/ugd/affb4a_1fc6453a2836484ea47d3282c110b097.pdf
    • https://static.usrfiles.com/ugd/2074c9_372660eb787a45b4980e08ee624b8b4f.pdf
    • https://cdn.shopify.com/s/files/1/0431/4644/4960/files/downton_abbey_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/9916/8673/files/49867987353.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/84084112803.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/blank_space_lyrics_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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cfb.bin
9f61efe3d22ad19d42c003d115b4fd7dcf7bca3b5d4c83d4002b71bb65fc43a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 5388 bytes
font_01_sfnt_off00009f60.bin
2242206006d07ec38651740a60ab07addf80db10c5bff17331bc79131bd524ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F60 10288 bytes