Malicious PDF — malware analysis report

Static analysis result for SHA-256 c55bead40d60aed4…

MALICIOUS

PDF

43.6 KB Created: 2020-07-31 21:34:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c0de1f440e465b7907173309c84898f SHA-1: 16d3852fab62442ddd5a231eb87c02d9f39a91c4 SHA-256: c55bead40d60aed4671d0cd22e7b506cdfaefc7405ece4dd29ada7142119dd94
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL that leads to the redirector. This suggests the primary purpose is to lure the user to a malicious site through a chain of redirects.

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.com/pify?keyword=playbook+barney+stinson+pdf In PDF document text
    • http://files.thomasfundraisingllc.com/uploads/1/3/1/4/131453065/3902226.pdfIn PDF document text
    • http://files.jlsnaps.com/uploads/1/3/0/7/130776042/1ec588ba97.pdfIn PDF document text
    • http://files.rhbconstructorainmobiliariasrl.com/uploads/1/3/1/8/131871729/mezuxilogavewem.pdfIn PDF document text
    • http://files.tastefulgatherings.com/uploads/1/3/1/8/131856949/9847458.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/1/0434/3093/6733/files/24825382788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/zuwixogomifiloduto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/42152435777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98048873934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/21265432713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5552/1700/files/nopexiwetawatig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/manaluwadovaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0250/files/42387680114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/gezasapiralebesimegugujez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/28919682724.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 8

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_off00006c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1E 5344 bytes
SHA-256: 54945ae14212f17bf4ef2e818ea31bb650439c441919ce464815dead63d4cadc
font_01_sfnt_off00007e5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 10488 bytes
SHA-256: 9198dd292869b0cb539dbf37d15d104d28a68b9b1858a7ba42a1aebefa5e0c38

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