Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5b31b4cfd0c458…

MALICIOUS

PDF

43.5 KB Created: 2020-08-19 16:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 053fbe37cd9e84b657fc071c36b477f9 SHA-1: b901f6cbf2c7c7d513630c14f09f4951f1733b93 SHA-256: bd5b31b4cfd0c4580e97dd43570e1dcfeff426f1485ad1ed19ce36717f7e7b30
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, while obfuscated, contains text related to a worksheet for class 1, suggesting a social engineering pretext. The presence of numerous external links, many pointing to Shopify domains, indicates a link farm strategy to obscure the ultimate destination.

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=in+on+under+worksheet+for+class+1 In PDF document text
    • http://files.dearborn411.com/uploads/1/3/2/7/132740860/xokagilo.pdfIn PDF document text
    • http://files.stephenedwardmazujian.com/uploads/1/3/0/7/130740212/jijuwonivovana-womiwebelave-zilutodezumedi-guwonalibo.pdfIn PDF document text
    • http://files.lisa-stanley.com/uploads/1/3/2/7/132740260/8fd48a9971c7559.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/1/0430/4899/2930/files/53545136033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4551/9513/files/dictionnaire_bilingue_anglais_franais_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/zuxametisamoderip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/alloplastyka_stawu_biodrowego_pozowski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8216/2084/files/43113448398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0882/files/spelling_words_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/32867993301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/favavazijijigibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27150836515.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_off00006b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5252 bytes
SHA-256: 8f94ced5b2c5e4dddd1a6ab79a2592ea392f6b3052cc073c32a8cb76f1fa04a9
font_01_sfnt_off00007d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D92 10564 bytes
SHA-256: 0577ee813d47a3727586e06b9945f95739431eb46037f563b54ae46a9ab84877

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