Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d469736c4aac8a…

MALICIOUS

PDF

50.2 KB Created: 2020-08-15 02:56:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 524b7efaa98231eb8d9578142bf47e20 SHA-1: d31ad9d0ade9bcb3efc3516ee3249e125e734098 SHA-256: 04d469736c4aac8ac910bdd96169eb6dc3871184399c07e416d08082975bb520
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, suggesting it is designed to lead users to external malicious content. The document body, though heavily obfuscated, contains text related to 'Aflac group wellness claim forms' and the malicious redirector URL, indicating a phishing or scam lure. The presence of numerous links to PDFs on Shopify and other file-hosting sites, combined with the redirector, points to a campaign distributing potentially harmful 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.cc/pify?keyword=aflac+group+wellness+claim+forms In PDF document text
    • http://files.billsofer.com/uploads/1/3/2/6/132682106/6748830.pdfIn PDF document text
    • http://files.kaydelynnphotography.com/uploads/1/3/0/7/130776661/918103.pdfIn PDF document text
    • http://files.yourfurry-godmother.com/uploads/1/3/2/6/132681362/sitalexin.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/1/0432/1335/7211/files/basic_computer_course_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/gisisaxibewifademaruduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91489653134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7182/3267/files/9350172156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/88113129958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/sri_rudram_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7530/1539/files/pct_applicant_s_guide_national_phase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/unlimited_catapult_king.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7087 5416 bytes
SHA-256: 47c8c1b47267a2d64d9ad30feec9b1700efeb2f438dde3ebfcc0c170b2f3e880
font_01_sfnt_off000082f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F3 10424 bytes
SHA-256: 2e75be11fc766dc766659f4db3ed688843c48be5b7af9eb00070fda2a547f3cf
font_02_sfnt_off0000a6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6DD 16112 bytes
SHA-256: 275d0ef8f619a30f75d5b67021c85ffe51dbf44d82a44ecb2d07128ff93f9399

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