Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea782aaa4578e352…

MALICIOUS

PDF

45.4 KB Created: 2020-08-22 23:30:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7914f056e28d430bac2c97376db1d026 SHA-1: f1c931528012dd7b9d4535f77bb3f9a4c7c7e05a SHA-256: ea782aaa4578e352f9d3abbbd8c731c41e1ceb660efda3058c70673230c4867d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high number of embedded links, with one heuristic specifically identifying it as a "PDF_SEO_LINK_FARM". Another heuristic flags a direct link to a known malicious redirector, "https://ttraff.cc/pify?keyword=caveat+petition+format+pdf". The document body, though heavily obfuscated, contains this same URL and a title suggesting a lure related to legal documents. The primary attack pattern involves redirecting users to malicious infrastructure through a link farm.

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=caveat+petition+format+pdf In PDF document text
    • http://files.obryantdesignscapesllc.com/uploads/1/3/1/1/131164520/fubudotedejoxemixod.pdfIn PDF document text
    • http://rekalubid.molarcubed.com/uploads/1/3/0/8/130874598/xidurakug-galumaxi.pdfIn PDF document text
    • http://xazopox.mrspolay.com/uploads/1/3/1/4/131408027/9784571.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/1/0435/7675/4344/files/85048798129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/95113897877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/migikunosojumosolituleki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/recurrent_calcium_oxalate_stone_formation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0899/0116/files/byomkesh_bakshi_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/wokejalojizujavebitupez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/5996/3033/files/stardew_valley_android_beginners_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3382/files/68593575046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9866/1279/files/56024862649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/26690185732.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 1

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_off0000761e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761E 4944 bytes
SHA-256: 085ff7279e9763bbe725b27542d2e0a88ec97499bd6babc46958bb2fe0d27400
font_01_sfnt_off000086db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DB 9992 bytes
SHA-256: 52af07e49ead2b7edb5aa2990bd61eab6f7f4920c41934c19c75940500b67a78

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