Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d4f7fc571c97f6f…

MALICIOUS

PDF

42.8 KB Created: 2020-07-26 18:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20b5319362ea345a986a434c9bae6498 SHA-1: 0820842283b23d42266c5b226643822f5c07a115 SHA-256: 5d4f7fc571c97f6f1c2350b47cc9e5debc5917118ffa83b2663c6ef878c820bf
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 infrastructure, identified as a link farm for SEO purposes. The document body, though heavily obfuscated, suggests a lure related to an 'Iceland book' to entice clicks. The ML classifier strongly indicates maliciousness, supporting the attack pattern of using deceptive content to redirect users to potentially harmful sites.

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.ru/pify?keyword=guide+to+iceland+book In PDF document text
    • http://files.iwanttobeanengineer.com.au/uploads/1/3/1/3/131383760/69766.pdfIn PDF document text
    • http://files.karilagandancesociety.org/uploads/1/3/2/7/132712057/3463889.pdfIn PDF document text
    • http://files.backbonesports.com/uploads/1/3/1/0/131070579/d3336aa1cca.pdfIn PDF document text
    • http://files.mezzanineboutique.com/uploads/1/3/2/6/132695492/2739078.pdfIn PDF document text
    • http://files.fauncechurch.com/uploads/1/3/0/7/130740571/1db84a22.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/1/0433/2588/2520/files/dabozolezubepulitevedava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/57417604497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/82037939507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7948/9946/files/wurorujag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/85478568886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4160/2198/files/nomuroji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/60218225163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6571/9449/files/sebejosazusililozodos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/8376161511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/88041185518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8789/6488/files/selezebakoniweji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8911/5801/files/jogosenodefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/79867954441.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_off00006abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABB 4776 bytes
SHA-256: 7f09ed54cb5a0fd228ad8385cc170d5a61fab32b9d3ee35f9e41297cfb8bd0d8
font_01_sfnt_off00007b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B09 10216 bytes
SHA-256: 8f4ff554fa6eff12fc143a8a6dc1c62b2b7f21f4190b348bcc76ac811a052956

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