Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4d9855d7ba55e4…

MALICIOUS

PDF

37.0 KB Created: 2020-08-20 13:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec1797f86fe298207222ab990e0a0fcf SHA-1: dc7b03e0b3c0909e1a0aa8de829b5acdc3b9f859 SHA-256: 5b4d9855d7ba55e4c3844cfb55416f75f2f30fca8cb700a34e6ff2eb9d88b8e9
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is also present in the document body, suggesting a phishing or malware distribution attempt. The PDF also hosts a link farm pointing to multiple Shopify-hosted PDFs, likely to manipulate search engine results for malicious purposes. The ML classifier strongly indicated maliciousness.

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=king+size+platform+bed+with+storage+underneath In PDF document text
    • http://files.panaraimports.com/uploads/1/3/0/7/130776503/mowewijuw-biwetididetawup-tawerirajin-tegelokedop.pdfIn PDF document text
    • http://gepuxu.globaleducationmove.com/uploads/1/3/1/4/131438500/dodopamusumawovu.pdfIn PDF document text
    • http://files.hitrahestesenter.com/uploads/1/3/0/7/130740142/3be43d95a5b145c.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/1/0432/4474/8950/files/molukutozaruxavupemifin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7696/files/tanuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/calendar_2020_december.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rokagarunawawutasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/biotic_and_abiotic_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/advantages_and_disadvantages_of_twisted_pair_cable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/kuror.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_off00005357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5357 5704 bytes
SHA-256: 3f0002e5b76d4c28b756c850499c521a3cd286edd87499b582925dc5052ca352
font_01_sfnt_off000066ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AD 9608 bytes
SHA-256: ef75a81782de14e770fc944f4a55d93fbb3549a3500f987fd1d72c09a3365090

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