Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd4389beb46d8e4…

MALICIOUS

PDF

43.0 KB Created: 2020-08-08 05:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a79d359e274aaf2857f8a538e0d510c SHA-1: fe30a6ef4c842279bbe76069a4186cbd763362f6 SHA-256: 4bd4389beb46d8e47f9cc03ea9a3afa3415499792236e79501155f4a0ff4acb8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains references to academic applications and URLs, suggesting a lure to trick users into downloading further malicious content. The presence of numerous links, including those hosted on Shopify, indicates a link farm strategy to distribute malicious payloads or phishing pages.

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=cv+for+phd+application+pdf In PDF document text
    • http://timugajik.florida-oa.com/uploads/1/3/2/6/132681513/4635454.pdfIn PDF document text
    • http://fesigupo.aquaminerals.net/uploads/1/3/2/7/132740930/29f404a6e8.pdfIn PDF document text
    • http://files.lilypadplanet.com/uploads/1/3/1/3/131384113/diwavuburaboweje.pdfIn PDF document text
    • http://xelubo.thelightingsummit.com/uploads/1/3/1/4/131454024/3369954.pdfIn PDF document text
    • http://files.maraudersfootball.net/uploads/1/3/2/6/132681928/xekeb.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/1/0447/8697/4869/files/lima_barreto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3286/0056/files/bobejabonaripe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/begepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/games_like_stardoll.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/77594701499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/17542890941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8886/1602/files/value_added_tax_act_1991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/dabivizikivarikulesulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musigusuwekun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6790/6979/files/madevetew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/attachment_styles_in_relationships.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4211/0631/files/wunuwewoxodivubinexik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/nonerejuzasokakijutiwuvo.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 7

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_off000069c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C0 5032 bytes
SHA-256: c75fc313e9dd0d21ef7ceeac519b187c68d21d7f2bd1eca9aa37fd219a0b71c0
font_01_sfnt_off00007ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADE 10500 bytes
SHA-256: b1b9d85397396d9ba23cc2de100a63e9d7296a43667aac7ece70f014a8d25366

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