Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd730c456c5a43f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-05 16:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd1db702c6e4b51b191dff09ad099d76 SHA-1: 670ce30dfda2edcb93c46bfe4a403d68478127d0 SHA-256: 0cd730c456c5a43fc564feb73bcee421fb13ae945d4e3b20f4341c764d186c00
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector. The document body, though obfuscated, contains text and URLs suggesting a lure to download further content, likely malicious. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to a link farm or phishing attempt.

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=contexto+que+es+pdf In PDF document text
    • http://files.worldsate.com/uploads/1/3/0/8/130813511/1046134.pdfIn PDF document text
    • http://files.innerheartpathways.com/uploads/1/3/2/6/132681002/46e9335.pdfIn PDF document text
    • http://files.wyandotseniors.com/uploads/1/3/0/7/130738850/juzitubisogidu.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/1/0429/2358/9788/files/genizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/mojoliju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/6926654493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/lamoxojufateduxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53978683100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/46625004681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6357/4682/files/yamaha_htr_5930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7550/9155/files/nozivepupanireri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/vosez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/unqualified_audit_opinion.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_off00005f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7A 4796 bytes
SHA-256: 9863d3de53bf4d893dc5f767f619b85cfb944681a44047f6b0fb641fd4be70df
font_01_sfnt_off00006fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE8 14988 bytes
SHA-256: da566f80cd72541516d30b6815e7b17961e44d52344908d414baf5043b65f41e

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