Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4562bcb376a50f…

MALICIOUS

PDF

77.7 KB Created: 2020-08-11 00:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5373e14308affe70a197d5c50b32eaf9 SHA-1: bbff025257415e23140076a2888e344ff947e4ff SHA-256: dd4562bcb376a50f36e8c8d624c4911f7bf087cf8c00401a978f44c718cc7093
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure for a PDF download. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely for SEO manipulation to increase visibility of malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=lipids+biochemistry+pdf+download In PDF document text
    • http://suvululu.genesiscmty.com/uploads/1/3/2/7/132712323/7836284.pdfIn PDF document text
    • http://files.texassaddlefitter.com/uploads/1/3/1/4/131454733/figavavufupotapirex.pdfIn PDF document text
    • http://files.scfcseychelles.com/uploads/1/3/1/4/131483266/maramulegaf.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/1/0428/1974/7996/files/sadadegofupud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/rareraturabiviwowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/75887730575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/84948981435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/10557347061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/kujefivujosamuveresituda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/gizixivifajezakalaxij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/960480224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/kesuzuwawabidewun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zututekafufefosapebuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7052/1495/files/72466376321.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 3

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_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 5668 bytes
SHA-256: 39460b1dd8a5ea36fd0a5a6bba7ed5cb1e88b036e122c9cb9c37f29238ed7409
font_01_sfnt_off0001054f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054F 10724 bytes
SHA-256: 56eb8f60fc5ee12dfb5d98a5117906abe2e561c869e0b1eb97efc0f1ee70b392

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