Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b4c506c131cfc2f…

MALICIOUS

PDF

58.6 KB Created: 2020-08-09 15:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 569ea3f130dbbff113e6a50e0591e656 SHA-1: dccb6afcd28d50f4c2ae0cf5632d733d36093988 SHA-256: 3b4c506c131cfc2ff28b49f32faef45e742f0e84dc9951ea2e35f32c35f805e5
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it points to a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or malware delivery.

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=agriculture+bitbank+in+telugu+pdf In PDF document text
    • http://files.nanomat-conference.com/uploads/1/3/1/3/131398244/9278314.pdfIn PDF document text
    • http://files.lutermangriefsupport.com/uploads/1/3/1/3/131383657/noseraziladagifov.pdfIn PDF document text
    • http://files.daughterofthestarswellness.com/uploads/1/3/0/8/130874359/6ada28e4445e9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0499/2421/files/muguzobuwesadedamilagak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/95365700235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6941/files/6920585254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4536/2591/files/61723636654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/bilingualism_multilingualism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/23246546190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/31506910464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/gigidatijugopiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2014/7095/files/banach_space_and_hilbert_space.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5240/0789/files/gerotiwajonozodonenamamup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/tuparesozufakasit.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000700d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x700D 5340 bytes
SHA-256: 70ee00c7be0d3c8eb9af690f6b189cb7769364cbc6b609832da567e85c67715f
font_01_sfnt_off0000824b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824B 24644 bytes
SHA-256: c9827b1c89f4b544bead82688171df8ec648477bc15f0714419bebbef963663d
font_02_sfnt_off0000ba29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA29 10460 bytes
SHA-256: 4100133f0cea9c055e1ee3658bc04635aa8607d0cd2a17943d233f3262e97521

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