Malicious PDF — malware analysis report

Static analysis result for SHA-256 5992386d9b4dd2f9…

MALICIOUS

PDF

38.9 KB Created: 2020-08-22 18:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfe42e1f60fb8141912db4a3f167762f SHA-1: 47333a6f9e50e4abb8a46be9161de029c7242b85 SHA-256: 5992386d9b4dd2f90ae485894e905432c7f44261d7bbaab60acf3fabc8128910
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or redirection attack aimed at leading users to malicious content.

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=manual+ar+condicionado+carrier+x+power+inverter In PDF document text
    • http://files.regencybydesign.com/uploads/1/3/1/4/131482931/2143000.pdfIn PDF document text
    • http://files.cleanwatergso.org/uploads/1/3/0/8/130814003/tapiwumetu_kasopigudani_dadasukur_fabamedazivajob.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/1/0430/1121/1425/files/gawiwojen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/36911387742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/wuriligolonazapotubisik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9197/4557/files/42238358561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/tableau_tutorial_for_beginners_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/desmos_introduction_to_geometry_proofs_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/xajakibika.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_off00005c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0A 5112 bytes
SHA-256: d2883b74f22998d140092d13b9ac508c3bc8d4599573fa39e15d0b5683c7ce88
font_01_sfnt_off00006d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D91 9692 bytes
SHA-256: 02806c72472fd128620597d00d635547382dbabd4df2b1cc40a76419d2f7ac69

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