Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b3c0815d0bf487e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-08 15:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d780832ae0b066810c17f33b455f904f SHA-1: d0c0fe2f7bab1c767f20908394d4cd080222721d SHA-256: 1b3c0815d0bf487e6977d4785450c0bf11316fe3ea1ae88c8c4f7c70f1a28db6
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to HIV/AIDS facts and the URL itself, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for the malicious redirector. The file was generated by wkhtmltopdf, a tool often abused for creating malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=hiv+and+aids+facts+pdf In PDF document text
    • http://fizuzu.csangha.org/uploads/1/3/2/7/132740541/milojipazelowuwinij.pdfIn PDF document text
    • http://files.clothdiaperdepotusa.com/uploads/1/3/0/9/130968934/tibapizazuja-goges-livasef.pdfIn PDF document text
    • http://files.rousselartconservation.com/uploads/1/3/0/7/130775848/52a9280113.pdfIn PDF document text
    • http://files.doorado.net/uploads/1/3/2/6/132681823/vulaworuru.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/1/0431/5545/6164/files/quality_assurance_officer_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/95227401388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0492/7905/files/xotavik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/allegorie_de_la_caverne_de_platon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4658/3970/files/56056117401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/up_assistant_teacher_exam_paper_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/8824025823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/automatisme_informatique_industrielle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8976/4245/files/tecnologias_de_la_informacion_y_comunicacion_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1581/2766/files/pliny_the_elder_clone.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_off00006681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6681 5040 bytes
SHA-256: 9c26c41d6ab3b460aa9d7f6f3e5cd3d5fe9d121d41c972fb850003510321f1e5
font_01_sfnt_off000077ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CA 10536 bytes
SHA-256: bdb249fd75da7795ae5ef0167b4bc4dede945c1908082bbba62724a72c5b900d

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