Malicious PDF — malware analysis report

Static analysis result for SHA-256 4429dca06f8323e2…

MALICIOUS

PDF

42.9 KB Created: 2020-08-07 05:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f938027f1e1919b234e5bad832623764 SHA-1: 53d73867115087c170fa198300384b10c431b402 SHA-256: 4429dca06f8323e241ad8be83f58916ff563ea5f3931dcf377963d02c5ad9d4d
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at https://ttraff.com/pify?keyword=challenger+annuity+rates+pdf. This suggests the document is designed to lure users to malicious infrastructure under the guise of providing annuity rate information. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=challenger+annuity+rates+pdf In PDF document text
    • http://files.afterthefallinc.com/uploads/1/3/0/8/130874213/burifikivaberu.pdfIn PDF document text
    • http://files.gymnasion.net/uploads/1/3/0/8/130874382/mogilugabobulomolow.pdfIn PDF document text
    • http://xitaziv.melco-audio-masters.com/uploads/1/3/0/8/130814238/6663350.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/1/0434/1540/4695/files/92356328490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/60055852742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/afloat_shopping_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/sodosel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/pevolafasanasezefapatem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3367/3380/files/5256952729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/tapakinakobuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/kuruzapomipofabux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/37449543553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/segedini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/xozidirixogesapenume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/wufogalugoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1383/2857/files/61357731000.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 4

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_off00006a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 5308 bytes
SHA-256: cacae1b1a1c126415705e6dc1594b9403e4f6bedd7906769f3c3f633bbaa3b55
font_01_sfnt_off00007c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3F 10132 bytes
SHA-256: c9ffd0b0fbf82f05a04e711ea49a6672c7c464af342136d3dee4093afde2a84c

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