Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c71ed79a08e1b8f…

MALICIOUS

PDF

61.6 KB Created: 2020-08-09 01:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61a4a4782baa747a9f6eae556a42fddf SHA-1: 7663f836b340e1bb428fc68d55e76568e27532d1 SHA-256: 6c71ed79a08e1b8f3eadfad3965016ef19593ff3f105bef0a80089dec52774a7
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to an SEO redirector service (ttraff.com) which is flagged as malicious. This indicates a likely attempt to direct users to a malicious site, possibly for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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=blanc+manger+retro+pdf In PDF document text
    • http://files.ncaaop.com/uploads/1/3/2/3/132302824/67987eb.pdfIn PDF document text
    • http://durog.shoremakesscents.com/uploads/1/3/1/6/131636612/d8da454e7d9dfdc.pdfIn PDF document text
    • http://lukonewad.relentlessknitting.com/uploads/1/3/0/8/130874359/dexiw_negutalip_kituzejofasede.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/1/0429/1254/6975/files/material_design_shadows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/61690254324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/92856735357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4341/files/dusaxote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5786/1023/files/statistical_analysis_with_excel_for_dummies_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/xuwakenumexuzixaxoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/40034345386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/pdf_file_opener_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/19013925664.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_off0000b40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB40F 5344 bytes
SHA-256: 7b78d9428ffdc6cf51996ebce39b264d928500ab0080237ddb4cf1cd84d1fd01
font_01_sfnt_off0000c626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC626 10436 bytes
SHA-256: 16b2c4955a8d5013585e1a7de78a56add9ec6d825191a96297f973b9955ca771

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