Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a396bf16c5b891…

MALICIOUS

PDF

37.2 KB Created: 2020-08-15 01:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb96fef6cf8d8b782a2b79a91ecff64e SHA-1: d059259c08096e2ac05c00689f7a074f82a89cc5 SHA-256: 09a396bf16c5b891d5d48fc06d1c8252b46ae3c50aa1f15c18184f924b58d5e2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector URL associated with malicious activity. The document body and heuristics indicate a link farm strategy, likely intended to phish for credentials or distribute further malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wb?keyword=inference%20questions%20worksheets In PDF document text
    • http://files.wordplaygifts.com/uploads/1/3/2/6/132695707/01246ed0.pdfIn PDF document text
    • http://files.villageoffenney.com/uploads/1/3/0/7/130775856/9114901.pdfIn PDF document text
    • http://jotijove.bonedaddycrafts.com/uploads/1/3/1/3/131379552/e475f72707a5a.pdfIn PDF document text
    • http://files.spectorlondon.com/uploads/1/3/1/0/131070362/7704417.pdfIn PDF document text
    • http://vufugokoz.fossellfuel.com/uploads/1/3/1/1/131163635/towaxo_neritizalejideg_tiwigare_putip.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/1/0437/3164/8661/files/introduction_to_boundary_element_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/44532748033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/disagonedefobetebekeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/57377327792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/23513568061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1351/9006/files/jomovumijemexedaramif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/editing_documents_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9177/7952/files/americanah_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5610/2565/files/lizekibezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/javitanugumuse.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 3

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_off000053ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CA 4948 bytes
SHA-256: ee8e1847ef55636c3110ad89621151c81f15af06d1dd34a3c2b64a85216fafa1
font_01_sfnt_off000064b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B1 10360 bytes
SHA-256: e4c31aa30140cb74c02314bef83b866a3bf48ef805c6eef91361074453963fd6

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