Malicious PDF — malware analysis report

Static analysis result for SHA-256 b937ad806ad54013…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 02:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5abf4b253cdfbec0cdc57f60aaa3e79d SHA-1: 61dcb34df3b241b7fbee72bed43c29341c73e154 SHA-256: b937ad806ad54013f77096ef6de98b701318444f0e05379651c458f84b41f5a3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL, 'https://ttraff.cc/pify?keyword=abdominal+ultrasound+protocol+pdf', is identified as a malicious redirector. The document also features a link farm, with many links pointing to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted, but the extensive use of redirectors suggests an attempt to obscure the final malicious payload delivery.

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.cc/pify?keyword=abdominal+ultrasound+protocol+pdf In PDF document text
    • http://lixoj.ebbrown.net/uploads/1/3/1/6/131637814/xamuxaxat-ragab-jobibaduwuga.pdfIn PDF document text
    • http://tugimu.madebymitchell.com/uploads/1/3/1/4/131406082/d0717ac7.pdfIn PDF document text
    • http://files.rnbreptiles.com/uploads/1/3/0/7/130775969/wiratodapim-surolebol-duxed-fezabajil.pdfIn PDF document text
    • http://files.independentit.net/uploads/1/3/0/9/130969885/texipupiz-muvugu-wiworaj.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/1/0433/2558/7610/files/a_whiter_shade_of_pale_lyrics_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6504/1311/files/sample_asvab_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9041/8591/files/48560527169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6072/1829/files/sobibiwuxixokipubebunok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4718/8640/files/zibijutalunefolenuxukafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/adding_and_subtracting_fraction_word_problems_6th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/88879007217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/tinkers_construct_tool_modifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/jogujipit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0983/files/add_code_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8070/2366/files/sukubagile.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 5

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_off00006415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 5432 bytes
SHA-256: f58230871db71ffd6014bcea156ee39b9154e4ff1130719ca22e3539f732820d
font_01_sfnt_off00007668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 10008 bytes
SHA-256: 9f71085f9428ebebe03a1ca632860b58175f7d64afa76e4c96e240f02c0a2b3d

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