Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d28ea44460313e5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 09:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b21243fd36089160d5a9e01ef65b5208 SHA-1: f536e7f49d4eba629bca304f9515ebb6f68f2e4a SHA-256: 7d28ea44460313e5067529e696468bd03a3e529700e2c04512ae23d6720cd69c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'ttraff.cc' domain. The document body, though heavily obfuscated, contains the same URL, suggesting a deliberate attempt to lure victims. The ML classifier strongly indicated maliciousness, supporting the conclusion that this is a phishing or redirection attempt.

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=iso+27001+gap+analysis+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/cc089a_fcec0c0a5c8c4976acb272d2bc54364e.pdf
    • https://static.usrfiles.com/ugd/764aaa_c166125bbbac451a9490b2b6da3eae27.pdf
    • https://static.usrfiles.com/ugd/a2e20a_797cdb1709534fcbac00563cdac7be14.pdf
    • https://static.usrfiles.com/ugd/90423f_0e1c0ce2a7e640f3922dd25f71fbd9b2.pdf
    • https://static.usrfiles.com/ugd/bf650e_47df1f3a55c04aa29895fbfcea64126c.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cef954ce79b4218a3d2544bfe812b1c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6cc4d72f53e8455cb2471284def5cf10.pdf
    • https://static.usrfiles.com/ugd/82e28d_39903ae8bc9f48568f002b9ecf7313a3.pdf
    • https://static.usrfiles.com/ugd/a76634_e9bb4524224d46ecb4bb24d3e247a907.pdf
    • https://static.usrfiles.com/ugd/16a96a_a4ad52c6c21a4482a797f0b71a9364da.pdf
    • https://cdn.shopify.com/s/files/1/0432/1139/1135/files/la_jeune_france_cholet.pdf
    • https://cdn.shopify.com/s/files/1/0438/7454/9928/files/tap_air_portugal_baggage_information.pdf
    • https://cdn.shopify.com/s/files/1/0437/3371/3050/files/barilufewogopezi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8701/7637/files/buffettology.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_off000062ed.bin
8c6b9629036c24c46db11b84ee29601de805c8859cd77c39de39f58866001ad8
pdf-font-stream PDF embedded font (sfnt) at offset 0x62ED 5432 bytes
font_01_sfnt_off00007581.bin
2fe6c504a7c7aaa91e0f3136e7e03e9f04023db6c239db2745cf7be3eed21831
pdf-font-stream PDF embedded font (sfnt) at offset 0x7581 10008 bytes