Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3b5c756a84aa32…

MALICIOUS

PDF

41.7 KB Created: 2020-08-11 12:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ea2f6ff38ac3896f679878ce4bd70f2 SHA-1: 458abf3ce45864e47949a2632457ec926b3072a7 SHA-256: 8b3b5c756a84aa3261cd797f29f739408984560b198f5350d21e09c594010c3c
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, a technique known as a link farm. One of these links, 'https://ttraff.com/pify?keyword=renina+angiotensina+pdf', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or to download further malware. No scripts were extracted from this sample.

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=renina+angiotensina+pdf In PDF document text
    • http://files.minnieripertonfund.org/uploads/1/3/1/8/131871633/nopidoge-bexefutof-dijixagumufujed-nexumigigu.pdfIn PDF document text
    • http://files.alexbadas.com/uploads/1/3/0/8/130874205/9462770.pdfIn PDF document text
    • http://files.burntchef.com/uploads/1/3/1/3/131383959/ruxafivumebipajum.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/1/0430/6167/4133/files/ec_council_certified_ethical_hacker_ceh_v10_training_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/adobe_acrobat_pro_9_edit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4754/2165/files/venilap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/basakugixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/c_string_builder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7579/files/lotuzubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9778/3458/files/71065894478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/libro_la_cabala_el_conocimiento_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/ridinumeluwutitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/printable_world_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6675/1131/files/public_health_nutrition_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/silajoz.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_off0000645e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 5088 bytes
SHA-256: 5200ab7348dece385aa311ede4ad527c1418ce0440cdd1b7aace8952e9729aac
font_01_sfnt_off000075c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 11244 bytes
SHA-256: a8c17f38d532ea273e0d10ea553f45b7da972cde180d0e097323a7adbe455755

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