Malicious PDF — malware analysis report

Static analysis result for SHA-256 05212f36bb628be2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-06 10:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b32e44d7fb13e283273707d2735f815 SHA-1: 30f91ace31d49bebec0210d1ea02133aea60a605 SHA-256: 05212f36bb628be26314460d6c4b0914d9e37bdc5a95eb30cc5a3a74ff708252
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links pointing to a redirector URL, identified as malicious. The document body, though heavily obfuscated, contains references to the redirector and other URLs, suggesting a lure for users to click through to malicious infrastructure. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to 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.com/pify?keyword=bleak+house+online+pdf In PDF document text
    • http://files.cosmexmelbourne.com/uploads/1/3/2/8/132815968/b142704a9.pdfIn PDF document text
    • http://kenuko.healthplexfamilyclinic.com/uploads/1/3/1/3/131398428/2399827.pdfIn PDF document text
    • http://files.sky2000.co/uploads/1/3/1/6/131606563/zemekelan_rorivuzewizoz.pdfIn PDF document text
    • http://files.andersonboergoats.com/uploads/1/3/2/7/132712451/3792799.pdfIn PDF document text
    • http://files.odera.net/uploads/1/3/0/7/130776661/7274924.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/1/0431/1865/7703/files/22365541886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/48160913608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ralaguguzovepusumizus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/nordic_trac_a2550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/76587640922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/waxamikol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/xabutajanifejozesipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3859/6511/files/kajoxuxupunadaxob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/90485196944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/federal_financial_aid_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0282/9734/files/business_analyst_sample_resume.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 8

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_off00006494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 5148 bytes
SHA-256: 89bd19d502301c265b360b611c16318c486b072992ba6a2491a81e8d556a8788
font_01_sfnt_off0000761a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761A 10272 bytes
SHA-256: 613b24a8ffa647dfd80fb22c6189d5fc154da60967fdebefb73dcf894b53d62d

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