Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a05b4cfd0debfd0…

MALICIOUS

PDF

47.1 KB Created: 2020-08-29 16:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 239dcd9c8ee4717d61da052c7ad3ad85 SHA-1: 76576e6d644c41ae859e39a64319d059ce6e0735 SHA-256: 0a05b4cfd0debfd055059ecd237cc80bac636ccf7b5667d0193fc97edd9e7a9c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to PDF files hosted on Shopify, which is indicative of a link farm. One of the primary links, https://ttraff.cc/wix?keyword=eve+moon+goo+reaction+guide, is flagged as a malicious redirector. This suggests the document is designed to direct users to malicious infrastructure, likely for phishing or to download further malware.

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.cc/wix?keyword=eve+moon+goo+reaction+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/sunirowubisavefokabegos.pdf
    • https://cdn.shopify.com/s/files/1/0440/6129/4757/files/87087624923.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/tamil_movies_2019_hd_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/taparobuwirerako.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/telovosibelubesufugudet.pdf
    • https://cdn.shopify.com/s/files/1/0465/7981/0471/files/50264834689.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/65587194692.pdf
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/lubitasuwifukavufesi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/80498322722.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0490/files/somuviw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/pazorozuvegisebufemimuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/latar_belakang_agama_buddha.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_off0000788c.bin
eb084132adf2f9d2ded6d5b5a46cd4bba4ceaf593177ccc408ae7139e4a03372
pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 5064 bytes
font_01_sfnt_off000089b1.bin
152f22d8c119fc713c6e3fef768f665b6b3dc6242b641ace13710c2b5d1a8688
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B1 11760 bytes