Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a20150c4beec554…

MALICIOUS

PDF

68.4 KB Created: 2020-08-22 07:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e12719e4cd95c920a997eaee2ee10f8 SHA-1: 60f92abed6ec11ea87a14c705d09fb5db13fa541 SHA-256: 5a20150c4beec5543f58514021be322b7b127713aa0aa5bb1e9b96795832ac0b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, includes the primary malicious URL, suggesting a phishing or scam attempt. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

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=how+to+use+cuneiform+in+a+sentence In PDF document text
    • http://files.frunkpuppyshop.com/uploads/1/3/1/6/131607027/silupit-bavedo-nikezilizof.pdfIn PDF document text
    • http://files.zenbeautyspa.com.au/uploads/1/3/2/8/132815968/bitebufik_votasuvakamal_bugokolepibur.pdfIn PDF document text
    • http://dubezosu.skadoodlesboutique.com/uploads/1/3/2/7/132740585/3131511.pdfIn PDF document text
    • http://files.thesoftandwild.com/uploads/1/3/0/7/130776769/4187543.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/1/0432/5244/9435/files/82449718267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/5ghz_channel_width.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/human_body_parts_name_with_picture_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/bebubefugudotuzufen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5765/0584/files/82120591237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/femalonogela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/57511678406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/functional_training_programs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5736/9503/files/pitapeniraxigisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/noxifutupuvosumij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/sesizidalepuvipazajoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5341/4565/files/nagikawugijosunubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4794/3330/files/audit_report_format_for_fy_2020_19.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_off0000cf74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF74 5048 bytes
SHA-256: 8b5f4bcc7eaec4cbec365267e07d3e26d7c0c97a09a70c0d361fb5221cc27b32
font_01_sfnt_off0000e092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 10456 bytes
SHA-256: a929d935f589b37c9dcbb3ccd3876efd5c343ea86e12f1e0455a973a03521a74

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