Malicious PDF — malware analysis report

Static analysis result for SHA-256 d43e0a515b391808…

MALICIOUS

PDF

46.1 KB Created: 2020-09-09 20:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93a7d118cd9f3ccdf5636cc83a703718 SHA-1: 9c1fa7cee141c0a9982f0ffe4add2e3e5baf222a SHA-256: d43e0a515b39180859f99c4e9171d2dd1eefbed4897d7b36d688ce0d951da0f2
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'reporting distributions from irrevocable trust' and the malicious URL itself, suggesting a lure to a phishing or malware distribution site. The presence of a PDF link farm heuristic further supports the malicious intent of directing users to external resources.

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.me/wix?keyword=reporting+distributions+from+irrevocable+trust In PDF document text
    • http://lugalidu.dynamicgas.com/uploads/1/3/1/8/131871674/4274130.pdfIn PDF document text
    • http://files.kentchancpe.com/uploads/1/3/1/4/131407469/4351254.pdfIn PDF document text
    • http://files.sunshinervparkdadecity.com/uploads/1/3/1/0/131069879/344306.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://static.usrfiles.com/ugd/5e81b9_ea0e89f900ca43de9bfc351847efd7f5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d954c5_14c5c4962ba44fbab625eb592de93fd7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c5d40f_7f8ff22506bb4470b68c3eb7b814c99a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_94ebdc909c7447589fc4695df380f5fd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0511f5_1881284034924f81a7aff4c8de37963b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1e8dad06ab114994a11c46421c81dde1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f35da0_6ae297257fcb4995a35ec3c3e1884e48.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ede58b_63209a6bd6094c2e9c41ffd7e4e642d0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4d935e_e85a864643cc4a1c99c1a020c0269dc6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/73f3b0_79ecba75238d46699a5ad9357a279349.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 5564 bytes
SHA-256: 7c7287cf9d15ad267b193219cbfe4a95c9f2601aa8217388e6ad8009f1bc8872
font_01_sfnt_off000079d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D5 10452 bytes
SHA-256: 03a1e8537da27c0886c3b0744491536140057e696c8a597bad230464fe0ce6d0
font_02_sfnt_off00009d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D90 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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