Malicious PDF — malware analysis report

Static analysis result for SHA-256 82562fb030eda925…

MALICIOUS

PDF

37.3 KB Created: 2020-08-16 02:21:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6bfd9f9bc3cc972b127c69bb183995b SHA-1: bd28fb3faa82f3422efa2325cffa580021be8b32 SHA-256: 82562fb030eda9250423cae7d59fd01276b4500d790e3c1fc5305e7dd3e5dce3
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) identified as malicious. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a link farm or phishing lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a large number of external links.

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/wb?keyword=el%20fiscal%20augusto%20roa%20bastos%20pdf%20descargar In PDF document text
    • http://files.nalcbranch489.com/uploads/1/3/1/3/131379236/xamapolipokazuf.pdfIn PDF document text
    • http://teregedut.okanagan.com/uploads/1/3/1/1/131164066/5205008.pdfIn PDF document text
    • http://novuwuku.pondsidestudio.net/uploads/1/3/1/1/131164250/4247397.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/1/0430/6491/8165/files/21366162311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3480/3352/files/49649039059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/nitrogeno_caracteristicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4963/6255/files/modoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/851351250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/43562035680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/zujopod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5050/7167/files/texto_argumentativo_ejercicios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/holy_bible_revised_standard_version_catholic_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/pais_vasco_historia.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_off0000531c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531C 5420 bytes
SHA-256: 9935b2b8e86a90cc7328fcef1776b5c02a6b4b32c3c18d27c6151e7893771bd4
font_01_sfnt_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 10184 bytes
SHA-256: 03e2bde755b91021bd84b07f6f9edcad25a457914eadec2b0e0f6f921f060ecd

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