Malicious PDF — malware analysis report

Static analysis result for SHA-256 479612c0bc1717f8…

MALICIOUS

PDF

39.3 KB Created: 2020-08-20 05:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d01fe99698e242a91be9214a3d53d43f SHA-1: 684e08f65934262f726109888e17fb8e63ff4deb SHA-256: 479612c0bc1717f829a9ec7dda3eef8772e8f0947e7c109b28546b737f93ae6e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with a job application theme. The heuristic firings indicate this is a malicious redirector and part of an SEO link farm, suggesting a phishing or scam attempt. 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.com/pify?keyword=little+caesars+job+application+pdf+2019 In PDF document text
    • http://files.nucoonrizn.com/uploads/1/3/0/8/130813531/7210178.pdfIn PDF document text
    • http://files.atouchofclaas.net/uploads/1/3/1/8/131871849/f40894.pdfIn PDF document text
    • http://files.stevenpaulalvarez.net/uploads/1/3/0/9/130969699/aafae1ef3.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/1/0429/5743/9129/files/68708728873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/16042814107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/tivosebozufaxuvulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3301/0082/files/84924744650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0242/files/najedirojuliwaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3870/1728/files/weather_report_online_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/font_awesome_all_css_download.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 5

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_off00005a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A35 5788 bytes
SHA-256: a53f22984d6ca2fb2016bcbfe9238fe808d5b435fd6f191447178dc94d419193
font_01_sfnt_off00006dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEE 10156 bytes
SHA-256: 9749e642a70540fe08458b9162ffbb6272ed6f24f4b98a2e9838270fed12f2cb

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