Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb1bd35112b4716…

MALICIOUS

PDF

41.4 KB Created: 2020-08-21 18:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b58ec21fecd419534831ea392fdd8bb0 SHA-1: 646ba1c4329a9c22156422f3f7fb1cd9a3b709bb SHA-256: 9eb1bd35112b47162500d63ad480a49b676bbf6755e212c67f1455d098f6eef6
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The primary heuristic indicates a PDF link farm, suggesting a tactic to manipulate search engine results or distribute malicious content. The ML classifier strongly supports the malicious nature of the document. No scripts were extracted, limiting the analysis of direct execution behavior.

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.ru/pify?keyword=o+que+e+uniforme+ou+biforme In PDF document text
    • http://lokele.leadingtowellness.com/uploads/1/3/1/4/131406717/401f8f40ec.pdfIn PDF document text
    • http://patirube.rhymingchemist.com/uploads/1/3/1/3/131381006/vesaxaxigepaw.pdfIn PDF document text
    • http://napas.flyajetsim.com/uploads/1/3/0/9/130969690/sagivi.pdfIn PDF document text
    • http://files.generalpencil.com/uploads/1/3/1/8/131858916/kuvowafej_gafipabaje.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/1/0429/5213/0716/files/81191635504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/angiogenesis_cancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/nafefozubejakomelel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/basic_knowledge_of_share_market.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/naruto_the_last_movie_downloads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/wemixapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/46797086571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0683/4334/files/bulimia_facts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0599/1322/files/campbell_biology_8th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0261/7252/files/fundamentals_of_astrodynamics_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8026/0511/files/37206446529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6290/2438/files/51284283726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/gulorajopasedibadux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0057/files/accidental_death_of_an_anarchist_analysis.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_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 4784 bytes
SHA-256: 58bce94d4e13e3f01393dc334ec3ad66b14b804ede8288d17cf238eef5d4bb86
font_01_sfnt_off000071ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 12448 bytes
SHA-256: 39159885cc558a8d8522e8a6f1660f34a4f3da7ae4557a0f5624891efa2dffea

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