Malicious PDF — malware analysis report

Static analysis result for SHA-256 7589b18ce483a72f…

MALICIOUS

PDF

43.4 KB Created: 2020-08-21 14:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f823754969a742bb78d603826ec1f1eb SHA-1: 7ea0e6c9a4cb189d143490327531928fdbd24e9f SHA-256: 7589b18ce483a72fce0822e74693f6f77dcba41ab1665f6263935da124c2b6e4
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, disguised with keywords like 'prepaid amortization schedule template'. The heuristic firings indicate the PDF is a malicious redirector and part of a link farm, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious site, potentially for credential harvesting or further exploitation.

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=prepaid+amortization+schedule+template In PDF document text
    • http://files.srufoundation.org/uploads/1/3/1/8/131871633/0d76796ff67.pdfIn PDF document text
    • http://lutoju.tomsolaribuilder.com/uploads/1/3/1/6/131636744/lazujag.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/1/0432/3488/5796/files/85499607239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/stress_social_support_and_the_buffering_hypothesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6538/4861/files/old_town_road_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/fitusuzapoberorejapefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7639/4901/files/jugezozazarataxoremopal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/79631022579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2633/1286/files/mysql_drop_column.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/human_embryogenesis.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_off00006c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C26 5364 bytes
SHA-256: 8477490e7bd83126e4c4d5245f269388a66e0f7d3b0278e396ddf92ee76f4118
font_01_sfnt_off00007e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E34 10100 bytes
SHA-256: 5bd8b8873462596a83815f52b6c7159b2f709d19b5d08bce523e25de6251e72c

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