Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9f5c3f47cecfed…

MALICIOUS

PDF

39.5 KB Created: 2020-09-02 21:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6a9c42176f7fa871f268f222d3454467 SHA-1: 78b39ef25624ab963197074f9f74da576dc67204 SHA-256: 6d9f5c3f47cecfedfce2b61f0b2c52923b4e9ab03ea41dcd7388f36cf527e675
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/pify?keyword=bi+rads+atlas+free', suggesting a phishing or scam attempt. The presence of many external PDF links also indicates a link farm, likely for SEO manipulation or to host further 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.link/pify?keyword=bi+rads+atlas+free In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1938/5502/files/84542412347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/juvodatupifosarini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6607/files/winrar_for_pc_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/laboratory_manual_in_physical_geology_10th_edition.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_83e238e609754ece8cb303595b7fac41.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca22b_b1137c108ae6437b980c31a7ead5a89f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/73c254_6e27289893b3437b8e82faa5d8748118.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8810646556304b8db3d75e64039a340e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/01e791_f790b2818bcb47bd8f5a5d3ceba4743d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9693/9427/files/bazaar_full_movie_moviescounter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/chakra_awakening_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/bilotajesutokes.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5E 4952 bytes
SHA-256: d59d1c9647d98e42df4e24f6a636f5eba48301e8178356d75419896727f61853
font_01_sfnt_off00006e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 10668 bytes
SHA-256: c211ebabb8d35e986f5cd8e6ecad1dad269bdee0572f0837eced7bb527e0d55e

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