Malicious PDF — malware analysis report

Static analysis result for SHA-256 543de2e7b51c100d…

MALICIOUS

PDF

39.3 KB Created: 2020-09-11 02:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58eb066df733ef487b1ee6b4bf6295e2 SHA-1: 8032f984fa96971dd1078133f07e5f2672c4d7cb SHA-256: 543de2e7b51c100d8f1f785f451328555feae8cc62a21bdbe70037eb6c85a20c
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with several identified as malicious redirectors or part of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate malicious intent. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links, suggesting a lure to external malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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.link/pify?keyword=hwy+40+traffic+report In PDF document text
    • http://vuvur.missingpersonsrv.com/uploads/1/3/2/3/132303354/598715.pdfIn PDF document text
    • http://files.armwrestlingarchives.com/uploads/1/3/1/3/131380934/5d6331b1284650.pdfIn PDF document text
    • http://lirisosa.athomehvac.net/uploads/1/3/2/6/132680874/9236808.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/1/0433/0517/3147/files/d_d_3._5_complete_arcane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4397/0463/files/carbon_copy_forms_for_teachers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/tajevokovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/jijaropax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/jivibusimobadetexevokujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3401/6924/files/jadisixoseleninogedamop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7626/3574/files/27608617271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1639/6695/files/73907581300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/10669204189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4672/3996/files/dutajovuzojuvifiketamozo.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_off0000594b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x594B 5184 bytes
SHA-256: c15dda9300219153f73df0166554f926d945376dfc0027ee0776a483df3dfbe3
font_01_sfnt_off00006b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1F 10980 bytes
SHA-256: a98d4e0c871949763c5897cda55eebd478ae575b51d1ba55e742af224764474b

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