Malicious PDF — malware analysis report

Static analysis result for SHA-256 731b906b585e355e…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 19:13:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea911b2ea16a32fe84b1200fbfc55d37 SHA-1: 56404f3d40178bebcbbb826a5095c7fa7f6ead74 SHA-256: 731b906b585e355e27d0210ec51fede6dfb607b035c690cf39dbe8347b986c27
162 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=formule%20rubik's%20cube%202x2%20pdf', suggesting a lure to a malicious site disguised as a PDF resource. The presence of a large number of external PDF links, many pointing to benign Shopify domains but also several unknown domains, indicates a potential SEO link farm or a method to distribute 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/wb?keyword=formule%20rubik In PDF document text
    • http://files.revlyncox.com/uploads/1/3/1/3/131398555/4668223.pdfIn PDF document text
    • http://files.coastnuflow.com.au/uploads/1/3/1/6/131636990/doxotulifuvaloxadumi.pdfIn PDF document text
    • http://files.crgddl.com/uploads/1/3/0/8/130814245/da98e90f8da510a.pdfIn PDF document text
    • https://ttraff.com/wb?keyword=formule%20rubik's%20cube%202x2%20pdfIn 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/1/0428/5025/5014/files/street_addresses_in_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/hexadecimal_addition_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/38201490436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6549/1106/files/34131398750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/jivisaxibuzuvigepewese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/9326143507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6728/4379/files/nidorino_gen_3_learnset.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/nonezuzapefixuzezirameb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/financial_accounting_for_undergraduates_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/40607258793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6764/9698/files/splwow64._exe_appcrash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/sefos.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6221 5484 bytes
SHA-256: d2962c06a1b77d824fc3c02e96d38f957e24efc41231b62787b6b155ddfb03b9
font_01_sfnt_off000074c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C2 10184 bytes
SHA-256: 85b4c22c7974b7560d3c5ed5c7748aa42335cb669f540aef7dadad0e6589bae1

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