Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b519ce82ab8262d…

MALICIOUS

PDF

34.7 KB Created: 2020-08-20 22:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea85fa6254a8f0143dc341dde812e994 SHA-1: 1f6a4a77eb3862243e5ca3414b11c868cf767086 SHA-256: 8b519ce82ab8262d6cc7083244cd47fb206d8984985932d5f7968d7dd86c7704
194 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=fidelis+care+essential+plan+income+guidelines+2019', which is a strong indicator of a phishing or malware distribution attempt. The document body, though partially corrupted, includes the same lure text and URLs, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on shopify.com, suggests a link farm designed to obscure the ultimate destination or to appear as legitimate content.

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.com/pify?keyword=fidelis+care+essential+plan+income+guidelines+2019 In PDF document text
    • http://files.ctforkids.com/uploads/1/3/1/8/131856353/7f9af85b2bcd.pdfIn PDF document text
    • http://kawipinuv.earringstolove.com/uploads/1/3/1/3/131398157/suxonebu_fagum.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/1/0448/3753/5906/files/12008039792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6732/6112/files/accounting_theory_and_practice_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6189/3534/files/bpsc_assistant_mains_question_paper_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0872/1045/files/kupixora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/89490439347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1479/7981/files/67014577319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6128/4757/files/88527767954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/dokofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5504/6037/files/metric_conversion_word_problems_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8344/7966/files/antonio_vivaldi_spring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/wipasipikalufidotubutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/geometric_mean_statistics.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 2

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_off00004848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4848 5828 bytes
SHA-256: c544ccd6c4442f47d9200d4870469edb70780c6ab86bf36f5c391de737665fd3
font_01_sfnt_off00005c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C04 9976 bytes
SHA-256: af2c9af4647ce866be87fd4da5f8554b6668bd2816671c5f63b98b02cb74f1c2

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