Malicious PDF — malware analysis report

Static analysis result for SHA-256 84352c093783efdc…

MALICIOUS

PDF

43.9 KB Created: 2020-08-25 18:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 67f6c81bf58eb4ea760e3b83c39315d8 SHA-1: b536959c85ee8f2823d77e2cd813e6a4fdaf458e SHA-256: 84352c093783efdc7d9bbc7c46a201841237e2ddc8e2e570a2b7be5e9ca675ad
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, indicating a link farm or phishing attempt. The primary malicious link, 'https://ttraff.ru/pify?keyword=por+qu%25C3%25A9+fracasan+los+pa%25C3%25ADses', is identified as a malicious redirector. The document body, though partially corrupted, contains this URL and other PDF links, suggesting a lure to external content. The ML classifier strongly flagged this PDF as malicious.

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=por+qu%25C3%25A9+fracasan+los+pa%25C3%25ADses In PDF document text
    • http://files.risenlordcatholicchurch.org/uploads/1/3/2/6/132681464/kasikesuk.pdfIn PDF document text
    • http://files.lifecheme.net/uploads/1/3/1/4/131438240/xalovulupugikav-gogititu-vonotumujo-kiwuxo.pdfIn PDF document text
    • http://xakosen.ms-wendys-class.com/uploads/1/3/2/8/132814500/suterisavafabepa.pdfIn PDF document text
    • http://tebujalim.yamilkanoa.com/uploads/1/3/1/4/131437850/3043583.pdfIn PDF document text
    • http://files.cornwall2theandes.com/uploads/1/3/0/7/130775310/9e42f41c295c9.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/1/0435/0204/3288/files/96692315999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2215/4908/files/cardiopatia_congenita_fisiopatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6122/3080/files/solamente_una_vez_agustin_lara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/robubijalarowipej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/leropuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/fashion_trend_report_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/autocad_house_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4223/4791/files/pipuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/9853837673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/9042/9340/files/49911056717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0418/2173/files/escepticismo_radical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/miloja.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_off000068ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5332 bytes
SHA-256: 3489c8bdcb3ddb6b6f407735658cb9a52438b89784541aeb8f24a753ba642c48
font_01_sfnt_off00007a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A99 11712 bytes
SHA-256: e26139739bb4882593363f376d626c7a27b832011404ae590e252ff7ea5c6007

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