Malicious PDF — malware analysis report

Static analysis result for SHA-256 046c38c8df9ff4df…

MALICIOUS

PDF

59.4 KB Created: 2020-08-18 15:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bddd58531cfa8f34971002132f56b28a SHA-1: c518bc453d6763cacac8222014959ff0197cdb54 SHA-256: 046c38c8df9ff4df5469f242515e8b4ad9c36cbe57b009ef49058a56fd12662a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure, likely intended to lead users to download further malicious content or visit a compromised site. The ML classifier strongly supports the malicious nature of this PDF.

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=chisel+honing+guide+bunnings In PDF document text
    • http://dusifun.q3tennis.net/uploads/1/3/0/7/130776031/tawofitir.pdfIn PDF document text
    • http://files.paulinepeelconsulting.com/uploads/1/3/0/7/130775784/zemebizijixar.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/1/0438/2585/6672/files/large_intestine_anatomy_and_physiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5609/4614/files/votepul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogazuzotefoninu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9554/7303/files/morijerume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/nepimovinofituwezedukuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/davijazituteluwanabogiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/8400/8862/files/45604841478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/el_sistema_nervioso_central.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_off0000ac77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC77 4824 bytes
SHA-256: fb9d08aba7f9dbb11b2db813a36ffc05796826385fbc761af85b02358e5841cb
font_01_sfnt_off0000bcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD7 10724 bytes
SHA-256: 230b509579bc9ea15d15a2685b2a24a49528abd8542da28d459642af8d02a54e

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