Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fd1c4e44a8f1b0…

MALICIOUS

PDF

34.5 KB Created: 2020-08-14 06:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f2ccef59f417a68c9131baad5433f9f SHA-1: 5e8157f34810cbced686448a48d1b8b54f3c01ad SHA-256: 63fd1c4e44a8f1b0373efcda213a0d6a925de68709d374dad1ac3d5900ba48dd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) disguised as a free download for "Microsoft Azure Fundamentals PDF". This indicates a phishing or scam attempt, likely to lead users to malicious content or further compromise. 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.com/wb?keyword=az-900t01-a%20-%20microsoft%20azure%20fundamentals%20pdf In PDF document text
    • http://vewon.carolineparsonshypnotherapy.com/uploads/1/3/2/8/132814930/8871127.pdfIn PDF document text
    • http://files.elizabethdanielledesign.com/uploads/1/3/2/7/132710654/gudukasawovevitabeg.pdfIn PDF document text
    • http://files.rotboxrustorations.com/uploads/1/3/1/3/131397987/2849910.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/1/0428/1732/3175/files/actual_archaeology_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6901/3144/files/majebovilodames.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/65406105028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/25495079265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/gokifomebub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/taxarumevevoditonufem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/kotalejopomed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/witagukinojalolarobagep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/mededinigozam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/tasexobunar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/jiruvux.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 5

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_off000048df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48DF 5724 bytes
SHA-256: 98b14c252a96da4f443419532d705dc2586c9f0b133c20b70a614271c2a798a4
font_01_sfnt_off00005c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 9668 bytes
SHA-256: d2669f57fb5840a9c688e76f7404e1684e4aaf8784bd0fd35a138a558a797e21

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