Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f54377404150a3…

MALICIOUS

PDF

42.9 KB Created: 2020-08-10 22:01:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86270fc7164b99fe45c86079e842f124 SHA-1: f072ba72a5edd502d6e50d0c6006827503f77d3b SHA-256: 63f54377404150a3d5417c958aae023401c640dd3761e0fd94de9389abc1b53d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary one leading to a known malicious redirector. This redirector is likely part of a phishing campaign, attempting to trick users into downloading further malicious content or visiting scam pages. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=21+cfr+part+11+validation+pdf In PDF document text
    • http://files.m2maxsolutions.com/uploads/1/3/1/8/131860378/6583fe.pdfIn PDF document text
    • http://files.naturalbirthingjoy.com/uploads/1/3/2/7/132712209/0c947eaca0.pdfIn PDF document text
    • http://kilunixi.michiganmajors.org/uploads/1/3/1/4/131407227/6692412.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/1/0430/7795/9833/files/juxaloxemegipumudufip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/novubogaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4980/3162/files/83138592343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/bandaging_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/totazowefematuzisusubew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/30674654276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7758/1465/files/xenitebupunuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/81982251066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/massage_therapy_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3120/5787/files/personal_pronouns_english_exercise_pdf.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_off00006aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEE 5120 bytes
SHA-256: 93feaf1cbc4965553bf9ec2575c389625fbc4388108007251ee1aec3e27d9319
font_01_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 10076 bytes
SHA-256: 6c9df3bd568a25819eb0dd4aecc47b70a7a403d751f762ec7da1abb8914b537a

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