Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e5a2595f69230b…

MALICIOUS

PDF

52.3 KB Created: 2020-08-07 17:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8aa55f1b2ffea08ba8553899aeff5a4 SHA-1: 6b06e6b17880f59dacbe2157d10deea654df6bb4 SHA-256: 66e5a2595f69230b0cbf9fe30fc30ae00d738740585c75f0691d4f42ddc2f410
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is `https://ttraff.cc/pify?keyword=cctv+camera+training+pdf`, which is likely part of a phishing or scam campaign. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-optimized links suggests an attempt to distribute malicious content broadly.

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/pify?keyword=cctv+camera+training+pdf In PDF document text
    • http://files.saintmarkssilvis.org/uploads/1/3/2/3/132303312/satenexowux-vovap-xomid-josunolaxuf.pdfIn PDF document text
    • http://files.moirajo.com/uploads/1/3/2/7/132710655/6052939.pdfIn PDF document text
    • http://files.elizabishop.com/uploads/1/3/1/3/131398188/bac8cc.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/1/0433/8463/5544/files/12649407151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/dark_souls_3_black_knight_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8473/2829/files/xavojej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/bavuxokuvozukopisug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/example_of_initiative_vs_guilt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0826/1287/files/puwob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9255/5416/files/zojafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/basic_computer_network_security.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/pasubofozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/pawubedopozebabukele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7053/7374/files/architecture_thesis_topics_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/37571622740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/30952425183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1112/files/wazoler.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 8

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_off00008e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E11 5232 bytes
SHA-256: a76ed53fe21a05ddf0f1521cec547fe6cfa04598e0a6f599cc5f80d3ed425b97
font_01_sfnt_off00009fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD1 10752 bytes
SHA-256: bd80680b98834b723bf363cbf00d1f08c8b9ecd92f48dd42d002fdc010ff8386

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