Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcdbf97894f1211…

MALICIOUS

PDF

47.6 KB Created: 2020-08-16 22:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c53207164e52a941681e6e0fa68d55b1 SHA-1: f74b9893543dff218cda1d31d879637349a31321 SHA-256: 7fcdbf97894f1211eb75fe4eaa0a62af0806fac87227456ce3421c4ce1c3e33e
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, suggesting a phishing or malware distribution attempt. The document body, though obfuscated, includes text that appears to be a lure for 'complete heart block nice guidelines'. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted, but the PDF structure itself facilitates the attack.

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=complete+heart+block+nice+guidelines In PDF document text
    • http://files.my-artsite.com/uploads/1/3/2/6/132695701/muwogufu-buporugosunoka.pdfIn PDF document text
    • http://movuso.workloadautomation-community.com/uploads/1/3/2/8/132814838/rimeke.pdfIn PDF document text
    • http://gobolu.francesmcmahonward.net/uploads/1/3/2/6/132695329/5169560.pdfIn PDF document text
    • http://zuwov.gunmanualsonline.com/uploads/1/3/1/1/131163962/nekibusifijag.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/1/0432/5107/3174/files/nuget_package_from_artifactory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3867/1010/files/zozujosobobebeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1867/1512/files/calea_standards_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/vande_mataram_lyrics_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/pujaditiburi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7330/0632/files/alkaline_plant_based_diet_aqiyl_aniys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7929/4358/files/84405392292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/financial_risk_management_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7587/8564/files/basic_chemistry_review.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 2

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_off00007d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D93 5596 bytes
SHA-256: dad8d557f629bc979f625941f80920ba8416c708e99e4a393de5998f08752151
font_01_sfnt_off00009061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9061 9816 bytes
SHA-256: a8674b938cff1ca562c5e70fd2b9ff12470d0611af2674391a40d1582d1ca11d

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