Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d694719bfd99f03…

MALICIOUS

PDF

46.7 KB Created: 2020-08-08 19:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b86c1ed59769627b9c73f4e72b97d02 SHA-1: 352e8d100f781840e3a475e59001923358c23bc4 SHA-256: 0d694719bfd99f03342e4866c53ffbf467bf2bccac1d7817212a7e066ef973a3
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, redirecting users through malicious infrastructure. The primary malicious URL, https://ttraff.ru/pify?keyword=epigenetica+livro+pdf, is identified as a redirector to potentially harmful content. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

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/pify?keyword=epigenetica+livro+pdf In PDF document text
    • http://files.iooftxgreaterhouston.org/uploads/1/3/0/7/130776529/begowenide-risedif-gafazinove-tiradu.pdfIn PDF document text
    • http://jagawojat.mouthfulofcakes.com/uploads/1/3/1/6/131606490/4352124.pdfIn PDF document text
    • http://files.oceanorganicscafe.com/uploads/1/3/2/3/132302892/wowen.pdfIn PDF document text
    • http://files.avraprana.com/uploads/1/3/0/9/130969057/nizigitudifosimobeko.pdfIn 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/1/0432/0509/9675/files/1-_99_fishing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5624/2581/files/free_editor_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/nipujakub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5688/files/bodosowaroboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5158/0568/files/20420114897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/11196045826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4287/3249/files/kusadepiridofanol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/nuwevoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/1101/9676/files/gabidebinawarako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/nemud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7784/2584/files/95108141547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1960/7962/files/rowipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/portland_trail_blazers_schedule_2020_18.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACC 4948 bytes
SHA-256: 5852e4cabb5999d205f5618ecdb8319145f22fcf8e15954d39ec566440f642e4
font_01_sfnt_off00007bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB8 10436 bytes
SHA-256: d78d5a5922e9dd37281eca7836207c4fcdb0cfa1e7617075b5bc0475e853415d
font_02_sfnt_off00009f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F72 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c