Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ff33be947fb840…

MALICIOUS

PDF

38.4 KB Created: 2020-08-18 17:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3b39a5fe7f5275fe1a360befbb408b0 SHA-1: 44731e9e9951515d83977674e535ef13039790c3 SHA-256: 89ff33be947fb8404ad79ea88e707e117eeed3f8b88a94bbcc3877b401491c32
194 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.cc/pify?keyword=cortes+de+carnes+rojas+pdf' is a known malicious redirector. The document body, though partially corrupted, contains this URL and appears to be a lure for SEO-spam content, likely designed to drive traffic to various external PDF files hosted on platforms like Shopify. The ML classifier also strongly indicated maliciousness.

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=cortes+de+carnes+rojas+pdf In PDF document text
    • http://files.drawingfromtheday.com/uploads/1/3/1/4/131409309/5864599.pdfIn PDF document text
    • http://files.fourthcoastensemble.com/uploads/1/3/1/0/131070845/c3a5dc8dac4.pdfIn PDF document text
    • http://files.gulliverstravel.com/uploads/1/3/1/0/131070872/juwunojukeja.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/1/0431/4143/1464/files/51725344192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9614/6073/files/98584928869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1167/0179/files/48345468138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/sanog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/35816721591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/welafekevibulejoxawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0183/9769/files/luvelukikupakagaxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/lesitazisolimaridof.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 3

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_off000058c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C7 5096 bytes
SHA-256: d30c0d23e4524293cf7e4937ed5f0fcb3af0b46438ddb4fce2ff7edabd743e3c
font_01_sfnt_off00006a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A34 10284 bytes
SHA-256: 812c2ed7d36203a1df1c511c7def74ac25da2da23a4dabd32848593eabce84f8

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