Malicious PDF — malware analysis report

Static analysis result for SHA-256 71110958271a8b6d…

MALICIOUS

PDF

34.9 KB Created: 2020-08-31 15:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78776ec861e7082a709aca6a4babb8bf SHA-1: 8ce6bcbe7eb65c63010fedf4144808428007bb07 SHA-256: 71110958271a8b6da8f133a01c7cd07ee9d58f5233a94ed35416cdff032ac1b0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/wix?keyword=bein+sports+live+app', is identified as a known malicious redirector. This suggests the document is part of a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

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=bein+sports+live+app
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7252/0353/files/55902246064.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/get_your_guide_last_supper_tour.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/51330675035.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54183348773.pdf
    • https://static.usrfiles.com/ugd/162fe6_62ea11c51a1143f7a72ab7e586edc3f4.pdf
    • https://static.usrfiles.com/ugd/04c368_babd17326ce948f2897c0711611ce8a3.pdf
    • https://static.usrfiles.com/ugd/8ab72e_e57acfd7df784a1eaceddbd39cf20742.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97242885008.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/97205078141.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/11920422520.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/semunapegenutomumokugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/98578023744.pdf
    • https://static.usrfiles.com/ugd/b8c837_026f840908d74eab9d7d60ded1dfcd08.pdf
    • https://static.usrfiles.com/ugd/5af86b_a3fec2a0263547879c431c31dd126845.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbde0697eade453e89748eba8e4cc329.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_off00004bab.bin
bfbe99dd71a8353dd5360273192edf3383926ee4a6b0ef008584cb05415f7794
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BAB 4924 bytes
font_01_sfnt_off00005c7b.bin
582d9c2e7cf0e22798932446d5e96a1183733b972f28f1473e84cfa766536c54
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 10044 bytes