Malicious PDF — malware analysis report

Static analysis result for SHA-256 02826cfaeae41b7c…

MALICIOUS

PDF

61.5 KB Created: 2020-08-21 00:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 075929a058caae950c5791c7eca6a728 SHA-1: aa8e578c62a319df7510251dc45c24d3733b6569 SHA-256: 02826cfaeae41b7cee21886b27589ac32c62bc8f7d25423fca2abbab40574cc2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a redirector service, which is a common tactic for phishing or distributing malware. The document body text, though heavily obfuscated, appears to reference news reporters, suggesting a social engineering lure. The ML classifier strongly indicated maliciousness, and heuristics identified the PDF as a malicious redirector and part of a link farm.

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=detroit+channel+4+news+reporters In PDF document text
    • http://wisumidog.wheelingorchestra.com/uploads/1/3/1/4/131437736/5635009.pdfIn PDF document text
    • http://tilom.elsdendesign.com/uploads/1/3/2/8/132814930/nadikufumivub-dixopesizanus-jajezusafuxa-lovunenivan.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/1/0435/3916/9429/files/vadiritofok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/10727014043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/39782550836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0676/2903/files/19841033605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/49194822484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/46399949305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/18002851803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/60577239869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/28135193915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3000/2336/files/62934483794.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 1

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_off0000ab3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3B 5200 bytes
SHA-256: e6bd9280297230db1248188d8ed5252af6d55f706f061f77ae7fcd8d5433e485
font_01_sfnt_off0000bd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD01 14016 bytes
SHA-256: 6e4449410decab165d1f88be2becba3374c408906c89bb0ed7238fb3a5a40c05

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