Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd15d223f43a367d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-16 20:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16d8ff46e2741f1cfae3b094aaa9d832 SHA-1: ac15e14d31f7c0fca458d0f5a28612bae72ca2fb SHA-256: bd15d223f43a367d56bcaa41dd6be34657c6c204bdf564620b6008cb5a93902d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially obfuscated, includes text related to 'Cochlear nucleus implants mri guidelines' and a URL that appears to be a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate a malicious intent to redirect users to harmful sites, likely for phishing or malware delivery.

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.ru/pify?keyword=cochlear+nucleus+implants+mri+guidelines In PDF document text
    • http://doduz.lcaclassicalhistory.com/uploads/1/3/1/3/131379732/gasozawi.pdfIn PDF document text
    • http://files.nwctahosa.org/uploads/1/3/0/9/130968985/0149d7fa856.pdfIn PDF document text
    • http://files.savoydelegation-usa.org/uploads/1/3/1/3/131382274/725361.pdfIn PDF document text
    • http://files.cconsultingsa.com/uploads/1/3/0/8/130815726/69d7be8fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5311/9648/files/mysql_basic_command.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/ludipaturozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/cash_flow_statement_analysis_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/probability_and_statistics_degroot_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/bipurifujafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/82015869663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0709/8529/files/dakajezok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/4615550100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5492/2902/files/wupudufekamemevapogabim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/68257159723.pdfIn PDF document text
    • https://medlineplus.gov/cochlearimplants.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0C 5392 bytes
SHA-256: 1700d0009fa26123536a5e65540711f31e299fa6e7805f89eb0127d1609cc5b5
font_01_sfnt_off00007029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 10072 bytes
SHA-256: 1d3d513f90578165e35f364dda64b6a8f09a3a1fb6ebd307381b43f624c9ccb1
font_02_sfnt_off000092a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.