Malicious PDF — malware analysis report

Static analysis result for SHA-256 0512dedb0745bd47…

MALICIOUS

PDF

52.9 KB Created: 2020-08-04 09:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bef0f9a907d294eafb7edbd7b7511f47 SHA-1: c76d9d3b727ba702d4a29872d88d3837cf1619fc SHA-256: 0512dedb0745bd4771c21a8d75e5ca242b77e76d0d6f443226cec56f82d99ecb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirectors and SEO farms, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. The document body and embedded links suggest a lure for a "free download" of a bird guide, which redirects to malicious infrastructure like https://ttraff.cc/pify?keyword=guia+ilustrada+de+aves+de+colombia+pdf.

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=guia+ilustrada+de+aves+de+colombia+pdf In PDF document text
    • http://kodojik.newbethelrolesville.com/uploads/1/3/1/6/131636655/kusixusotidu_zedezetinuvil_xezobunakiti.pdfIn PDF document text
    • http://files.tfreshproductions.com/uploads/1/3/0/7/130776776/9e25413b.pdfIn PDF document text
    • http://files.americanreferralconnection.com/uploads/1/3/1/0/131070374/vavenidajuvofam.pdfIn PDF document text
    • http://files.argumentcritique.com/uploads/1/3/1/1/131164016/mexotawitemomukejiv.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/1/0434/2795/4853/files/kexuxurivejeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/83985669485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/dadugavizakevujan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/vutekirirajolebokowalof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/13739015788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/miwaranav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/jozujativuzumeporuxenur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/a_small_creature_is_scrambling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5018/files/zatez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/bixadujigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/xerozazirowoluvogiwosapad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3028/files/rizamilagoxezobuduxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0527/0437/files/93001776480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/minobosarepanagamatubex.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 5532 bytes
SHA-256: 452b4f865a410aa8cc061bc64eb7a4f6cd75e15a7988f06d8162fad8686336d5
font_01_sfnt_off00009d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9C 13148 bytes
SHA-256: e18d0594570471cd845aef561329e46ecb452f07eb634e7e97b9bc6dbf39ad08