Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cd934892efe61e…

MALICIOUS

PDF

46.9 KB Created: 2020-08-10 21:21:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6017077ae47d26dda9a65ec8d4389fe0 SHA-1: 5076d5b5ba7a93f1eaae7cb85414dbb80bf1123e SHA-256: c3cd934892efe61e0b2aafbc8ca16cc4d294263575e1e14b6cbaf6ef7b61185c
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 a redirector service (ttraff.ru) known to host malicious content. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm designed to manipulate search engine results. This suggests a social engineering attack aiming to drive traffic to malicious sites.

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.ru/pify?keyword=clinically+important+drug+interactions+pdf In PDF document text
    • http://files.philly-anywhere.com/uploads/1/3/1/4/131454216/vevipiruzakev_xalovuwa_fesig_dixesonabom.pdfIn PDF document text
    • http://files.loudounlyricopera.com/uploads/1/3/2/6/132695472/91844e.pdfIn PDF document text
    • http://junodug.sspres.org/uploads/1/3/1/4/131409909/wurukot-levuwoja-jepupigagopes.pdfIn PDF document text
    • http://files.dba-group.co.uk/uploads/1/3/0/7/130776674/japame_bizuwofeguz.pdfIn PDF document text
    • http://bedubila.themindfulsquad.com/uploads/1/3/0/8/130813509/depekajafe.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/1/0431/7754/1792/files/49452541433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/pevanewafajukogenij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/how_to_get_adobe_illustrator_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0593/8584/files/bgp_protocol_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/naxibebetus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5688/2086/files/18671825700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/lugusit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/zepagunixakinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/16444305659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/zorufikokodukalunilaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/peliwazapavalujop.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DB 5484 bytes
SHA-256: d0cf61ab85208300ee28efc81e6cac891489cf866dbfa7de2ff4133dd1298baf
font_01_sfnt_off00008a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A67 10572 bytes
SHA-256: 0f6823bddabeced895acd86bd606fe4394508adc54bd4064f7317645646f8f69

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