Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a80a6828f50b102…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 12:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9eb040d3650c93cc4724dbd400b9943 SHA-1: afc3f279e35eadc6b4312499649aa0dcf44f04af SHA-256: 8a80a6828f50b1024b36c59ff331d7c093f1c5cd27efebff83f1087c8b9611d2
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=vocal+synth+vst'. Additionally, it exhibits a PDF link farm, with many links pointing to benign Shopify URLs but also including several unknown URLs hosted on various domains. The presence of a 'download button' heuristic suggests a lure to entice users to click these links. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vocal+synth+vst In PDF document text
    • http://nefewiwed.cottlewolly.com.au/uploads/1/3/1/3/131379636/fibodif-nufugekizubojig-zofegoniliru.pdfIn PDF document text
    • http://files.anikasten.com/uploads/1/3/1/4/131453636/7488570.pdfIn PDF document text
    • http://zunowuwos.elbowtreeflorida.com/uploads/1/3/0/8/130813979/9647527.pdfIn PDF document text
    • http://files.steinbachcommunityoutreach.com/uploads/1/3/0/8/130874594/4549988.pdfIn PDF document text
    • http://files.davisdentallab.com/uploads/1/3/0/9/130969659/b036c2a8e66eec.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/1/0431/2468/7014/files/south_bend_lathe_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/54811005232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6418/5247/files/airship_openstack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/dependent_clauses_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/illustrated_encyclopedia_of_world_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/sinixegiwipito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/tropico_android_cracked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2969/1558/files/25537528079.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 2

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_off00006f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 4916 bytes
SHA-256: e3886aa6c796f77879b03e3a8bdb78c905611cc7cd733697634fb9012b2a5092
font_01_sfnt_off00007fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDB 12352 bytes
SHA-256: b119d627f1f60a688bf45650ad7474b8ebd349d3883ddf29c6e4a9138254e5f5

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