Malicious PDF — malware analysis report

Static analysis result for SHA-256 64454044294d6b60…

MALICIOUS

PDF

42.1 KB Created: 2020-08-19 20:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8af6c3b8000d85fa1fb5e2f4e5ed4059 SHA-1: e86106ac9c90c242d7240df671c0e955251093a0 SHA-256: 64454044294d6b609efb59701b547c3c52fd94c28595a78ff3bfdf0a962ba614
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains the text 'Castrol oil guide rego' and the malicious URL, suggesting a lure for phishing or malware download. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content. No scripts were extracted, but the embedded links are the primary threat.

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=castrol+oil+guide+rego In PDF document text
    • http://files.pleasantgreenmethodist.org/uploads/1/3/2/6/132695915/xuzawudejajep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8513/6021/files/39151619057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/38116802708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/17072668259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/kemam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/54880807208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/85186656316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/tigray_amharic_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/sowezogarakudowowoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/zibelebuduviwojudujekupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/potujurofuvekujavofuwat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/58387959222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/comment_lier_plusieurs_en_un_seul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3796/5979/files/javojabakunavidop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/nutrition_guru_mann.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DE 4792 bytes
SHA-256: b0edfc8f7c4963b6fae774d012c0547edb15c9d1c70705723f88328d3d25b285
font_01_sfnt_off0000693b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 10936 bytes
SHA-256: 0fdbd12eebcdeb41f5f3a1d7285c9d2bd17430289e8d4607966772375f7ff783
font_02_sfnt_off00008dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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