Malicious PDF — malware analysis report

Static analysis result for SHA-256 90837f57fe62455b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-08 23:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 554cd5a4f79b342ce4914c523e8f2bac SHA-1: 9253aca609a255823581df0f4956b3d070a772db SHA-256: 90837f57fe62455b2690a3ca6df0c8f0621cf11c77020e54ba501699c15f1ce9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and other Shopify-hosted PDF links, suggesting a link farm or redirection strategy.

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=que+es+un+texto+publicitario+pdf In PDF document text
    • http://mefogukub.njguardiancanecorso.com/uploads/1/3/0/8/130814238/tiwafifu.pdfIn PDF document text
    • http://files.glycanskincaresystem.com/uploads/1/3/0/8/130874097/6680498.pdfIn PDF document text
    • http://files.mattduffybaseball.com/uploads/1/3/1/4/131407357/buwapida.pdfIn PDF document text
    • http://files.anseasternwashington.org/uploads/1/3/1/1/131163559/fokum-xipoxadikanite-balukologu-zerimo.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/1/0428/9835/8432/files/95509007145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/wewekelerodegazix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nebedaxogatasimilore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/virarerurilobixafebeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/wofanizibozuxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/watovulatajifowamug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/2003_audi_a4_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/67289150518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2096/8351/files/definitions_of_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/35871656557.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 5

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_off00005ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC2 5420 bytes
SHA-256: 468009471f9b738bf8f9dade6c50682cf9734971582676e5bcfdf45bd9946309
font_01_sfnt_off00007139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7139 10556 bytes
SHA-256: 86106c05d6cb33c80dee751196cd7fe824e0bd5ac3178a3b48016c5e2c02a299

Open this report in the interactive analyzer, or submit your own file for analysis.