Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5dcb34aa87f7fd7…

MALICIOUS

PDF

51.8 KB Created: 2020-09-05 06:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b764ddd17885db7fa2b4f37398aa152 SHA-1: 00d92cd3ddb7729428c6f83f7ecf328dbec7140a SHA-256: f5dcb34aa87f7fd798e8d7a75ad139f9e574a5fc3d75bbd8975b3bb87312babd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=the+bourne+ultimatum+mp4+free'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The overall pattern suggests a phishing attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.club/wix?keyword=the+bourne+ultimatum+mp4+free In PDF document text
    • https://peliculastv.xyz/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/libros_de_osho_en.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9139/3702/files/core_java_interview_questions_for_freshers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/93005856440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/single_member_llc_operating_agreement_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/kavafekogebekimetixubusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6578/3958/files/carcinoma_epidermoide_in_situ.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/30338925724.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9e14ca_38dfc804952b472b907c856b3036c751.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/55cc32_e8efd4c3621d43f7ab1e451cb8f81801.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/834936_e389d45275c04277aae3bbfb9c44892a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b2ba6b_65ebfbfefdbc4c7d9ca8770c955eaf59.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_656e513a77274f1c97b5d609382164e4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0ad6c7_75b363c76bed4df19353a373326ae232.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b222ea_6bed0393387b4c64b06ae5e8d057560a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/12dc78_367151f3042d47a9a84e1c57b073f117.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A92 5024 bytes
SHA-256: e419ce3de84b96b29e6150b490bfc60754c0d23b76d303472d6cebee2f704898
font_01_sfnt_off00007b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B73 10180 bytes
SHA-256: 8e3917cd20a3b4a5271af659d20a829784af04f372ed95806e262ce41b400796
font_02_sfnt_off00009e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8D 16192 bytes
SHA-256: b168039b654f979c140925a464ef75142322e9f7cc9a166e601b7839e62a3bff
font_03_sfnt_off0000b3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3CC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f