Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ca3d5ab820f967…

MALICIOUS

PDF

48.8 KB Created: 2020-08-07 23:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22068d6b570527f6c997d9e910d5a7c9 SHA-1: 9d5a566b5935bd8ac9a85b05b77049ac1270187b SHA-256: 28ca3d5ab820f967e1b2bfb56ab2e1f7c981cdf6b6755c2db99f65909b5ed0eb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a redirector at ttraff.ru. The ML classifier strongly indicates maliciousness. The presence of numerous links, including a redirector, suggests a social engineering tactic to lure users to malicious sites, likely for malware delivery or phishing.

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.ru/wb?keyword=deconstructivismo%20filosofia%20pdf In PDF document text
    • http://files.joseluismartinezmoreno.com/uploads/1/3/1/1/131164568/lifukusufep.pdfIn PDF document text
    • http://files.serendipitybathbody.com/uploads/1/3/2/6/132695551/074d9.pdfIn PDF document text
    • http://files.picassofaceandbodypainter.com/uploads/1/3/2/6/132681885/9982836.pdfIn 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/1/0434/8831/3506/files/bekikale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/adventure_time_intro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/59361551709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3398/4157/files/13244562698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/37121648397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/remove_metadata_from.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/mukasipesikomede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/rotiriloxunukoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/kuzoxefuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8752/8103/files/wii_64_channel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/wawewopazumewavepabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5436/6877/files/rogabosofel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/fujomax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/vifekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/fiporunogezusuje.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 4

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_off00007f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0E 5360 bytes
SHA-256: 89554574b4b2cd18db1aa07afc7bcacbf8c9de1b44001ac389c93aab2332da5e
font_01_sfnt_off00009140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9140 11060 bytes
SHA-256: ee0c7d95c7906da97a16cdf16cc1d87ad72ba42040f7a2df3e2c9b1788df72fa

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