Malicious PDF — malware analysis report

Static analysis result for SHA-256 6087e57d12d5fc48…

MALICIOUS

PDF

45.0 KB Created: 2020-08-14 02:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f1492e60a6473f25b0875c9c49cfaad SHA-1: bea9b037c202f17e90e166d02d18e21613ae4328 SHA-256: 6087e57d12d5fc4892cb8a6a05e87c3b4eb9ba7c513ccec0299eeadaf3692165
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to medical billing codes and the malicious URL, suggesting a phishing lure. The ML classifier also strongly indicated maliciousness.

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=ct+guided+fiducial+marker+placement+cpt+code In PDF document text
    • http://files.lcanavigators.org/uploads/1/3/1/0/131070152/84f04.pdfIn PDF document text
    • http://files.ekosingers.com/uploads/1/3/1/1/131163740/dinadamezit.pdfIn PDF document text
    • http://dabovana.smithsystems.us/uploads/1/3/1/4/131454065/2483478.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/1/0436/1748/4957/files/14906192960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/52449858536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72905654063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/drudge_rss_feeds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9666/files/92079740683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/18221927212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3687/6695/files/ielts_band_score.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/92384974570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/broodmother_dota_2_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/98547869944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/mips_assembly_language_tutorial.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
🗂 Part of campaign: brigidvidler.com 6 samples

Related samples 6

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_off00007075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7075 5264 bytes
SHA-256: 70ce23fe0353b9a72502d56ddf4a0b15533ce120fc9f8a79d98fbf416005ed18
font_01_sfnt_off0000824d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824D 10700 bytes
SHA-256: fdad94992dfd261cbefcd946562fa9d6015281e0fbd0e7da7cc1a5986f85621c

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