Malicious PDF — malware analysis report

Static analysis result for SHA-256 6475b06cbe1ca95c…

MALICIOUS

PDF

40.8 KB Created: 2020-08-05 00:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 103ce7527b9541cd539e80b2d534772b SHA-1: 1db6583a4d70f758deb7fb26f10d26bb19d7c7a6 SHA-256: 6475b06cbe1ca95c1d1ddc7b5c701ed6729c470826690d4ff718a927326247cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links designed to create an SEO link farm, with a primary redirector URL pointing to a malicious site. The document body, though obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=spelling%20numbers%201-100%20worksheet' which is flagged as a malicious redirector. This suggests the document is part of a phishing or malware distribution campaign.

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.cc/wb?keyword=spelling%20numbers%201-100%20worksheet In PDF document text
    • http://files.radanjana.com/uploads/1/3/1/6/131606201/9916399.pdfIn PDF document text
    • http://files.hometohonningsvog.com/uploads/1/3/2/6/132681436/potufozadisuz.pdfIn PDF document text
    • http://files.speysidefalconry.co.uk/uploads/1/3/1/4/131438323/b9029e8.pdfIn PDF document text
    • http://files.theneuromuscularcenter.com/uploads/1/3/0/7/130775506/sefogutano.pdfIn PDF document text
    • http://files.onurokcal.com/uploads/1/3/1/4/131453588/d558157e32.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/1/0433/9980/7126/files/40504171875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/pukizutuxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/mamovanesilofar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1061/2644/files/12530490245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3271/4135/files/vukisutaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/18059113255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/burukisilafobusuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/articulos_cientificos_de_psicologia_clinica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/ibew_practice_test_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5433/3093/files/zaxirufaxuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/dapotajozofowo.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 4

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_off0000609b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609B 5648 bytes
SHA-256: fccdf0e87c467bc56f2daf5f0ff26ba0d72bc152ea50e0fd3015ffb81252cef1
font_01_sfnt_off000073cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CD 10156 bytes
SHA-256: 8910a43f008ba13c0c30c6ce55afeb6448204ce12f970020a685da813ff3caae

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