Malicious PDF — malware analysis report

Static analysis result for SHA-256 76c4d529f6d85efe…

MALICIOUS

PDF

44.7 KB Created: 2020-08-17 14:26:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcefb5292c020243f9848f83829f25de SHA-1: b3e2c5e1e1dd02c7a0435f1ab8fc2bca5ef460c6 SHA-256: 76c4d529f6d85efe2aa40c17a0b05fea0aa8ee90de474f377e87219071c6bdb2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract traffic. The presence of a malicious redirector link and the sheer volume of external links strongly suggest a phishing or malware distribution attempt.

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=chancery+division+law+reports+uk In PDF document text
    • http://files.sinclairsdesigns.com/uploads/1/3/1/4/131437699/ronuto_nuvik_juvuwijekiwa.pdfIn PDF document text
    • http://pobuke.katieshaw.co.uk/uploads/1/3/1/4/131437130/mojixodaxotabufu.pdfIn PDF document text
    • http://files.teararangatahi.com/uploads/1/3/1/0/131069987/pobiripu.pdfIn PDF document text
    • http://files.groovewithme.org/uploads/1/3/2/7/132712369/3296064.pdfIn PDF document text
    • http://files.dalslandholidays.com/uploads/1/3/1/0/131070374/jebatojovojekebimi.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/1/0431/8189/9944/files/change_to_word_document_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2109/0471/files/tuvexiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/90067172643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/sekinikiwatabedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/60109010524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/us_visa_application_form_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/wow_classic_hunter_pre_raid_bis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/93024050184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/44475791700.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: teararangatahi.com 4 samples

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_off00007049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5384 bytes
SHA-256: 1c7aa8e8cc1103d95e03d6ae1d146893acca37baa354329056c0eab4082035eb
font_01_sfnt_off000082a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A7 10244 bytes
SHA-256: abdc5898d1440e309bcbace548cedc78d875c85e4e84492e31421d0ef2317923

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