Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7ea22d40b2d0b2…

MALICIOUS

PDF

50.2 KB Created: 2020-07-29 10:16:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18e51610c97cb1ed83f9ff07f17ff886 SHA-1: 584e4ad328250d1ac4f4274c91044060b25ccb0b SHA-256: ca7ea22d40b2d0b2a0ae38cd131f613375d098e1de6d89504fbec25059eec3a8
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external sites, which is indicative of a link farm designed to manipulate search engine rankings or redirect users to malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to a known malicious redirector. The presence of multiple Shopify-hosted PDF links further supports the link farm characteristic.

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=commutative+property+of+multiplication+worksheets+pdf In PDF document text
    • http://files.cloud509ml.com/uploads/1/3/1/4/131483020/vekevoxefuwave.pdfIn PDF document text
    • http://files.thecatholiccrusade.com/uploads/1/3/2/7/132710745/bosasuzalojugal.pdfIn PDF document text
    • http://files.troizel.com/uploads/1/3/1/4/131453493/8840033.pdfIn PDF document text
    • http://files.ellabonitastores.com/uploads/1/3/0/9/130969146/1129452.pdfIn PDF document text
    • http://files.antoniodavidsinopoli.com/uploads/1/3/0/8/130873907/4090271.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/1/0430/9526/1333/files/tefulosukirutefupobeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatajimawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/laxafijopurifax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6473/7438/files/finewoxipaseni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/lotazuwurofukufijazenadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/79362271205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/55068514266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/rizerikuloxexetoxibejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2410/5124/files/27343062858.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 5616 bytes
SHA-256: acfc7af788b4c2cc2492f58b52e3f1f3e2957dd0bb40ecee866ae243f06b3a12
font_01_sfnt_off00007b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 13392 bytes
SHA-256: 8238b423202f49a69972cb4706b7b3e5d0a9592e0f6d03c8e8913e5beaa6812d
font_02_sfnt_off0000a5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5D7 16116 bytes
SHA-256: 586fd2d47d7ef655ac8fcedaf3a17ac43b55ee34544d24df6525aba8b365c669

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