Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db04bd9ef66c43e…

MALICIOUS

PDF

56.7 KB Created: 2020-08-24 13:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7584277bb27d943c55751d4c5aea2ee5 SHA-1: 09b2ebec5ba86113b4dfe42e0b7ff7df8a16869b SHA-256: 8db04bd9ef66c43e7f8cede096fcacabd7f516c3134d3eb9a3e8593ce734b6cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a fishing report and the URL that triggered the malicious redirector heuristic. The presence of numerous external PDF links suggests an attempt to create a link farm, potentially for SEO manipulation or to distribute further malicious 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=ship+creek+anchorage+fishing+report In PDF document text
    • http://ruberokof.rvsdmusic.org/uploads/1/3/0/7/130738847/valiwuwo.pdfIn PDF document text
    • http://denasev.samanthianixon.com/uploads/1/3/1/4/131453045/7b10054.pdfIn PDF document text
    • http://vewiban.successfulbreastfeeding.org/uploads/1/3/1/4/131438641/6d7014f2.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/1/0430/9493/3665/files/alphabet_cursive_writing_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3695/1964/files/33495513395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7757/4551/files/7515533387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1491/3191/files/attestation_d_hbergement_lcl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6754/6527/files/54833168258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/pikekarojixobowimavuwaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/ranugijesir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4714/7925/files/jidivisugoveral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/50_sombras_de_grey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7619/files/61906011823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/liwaresojodigaj.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_off0000a046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA046 5412 bytes
SHA-256: bd44c1be8896c07814595c2908ab82de065cd9f87c5e9c7975d8f7c19fb6e0b4
font_01_sfnt_off0000b2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A8 10556 bytes
SHA-256: 843525c34e7bfa56d51352295c22b2c4b14a33799847c7e6a8e9c20f70c1910e

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