Malicious PDF — malware analysis report

Static analysis result for SHA-256 a455b6dff48782c6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-25 02:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0d62ab2303d0ebc87bb483c5a6927ea SHA-1: 3999910ed19fbc47698cfe2eda2434a49a1a6ad5 SHA-256: a455b6dff48782c694134c91ff0e0b77a55c75d86db25758b85ef0888b768720
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the one identified by the redirector heuristic. The sample also exhibits characteristics of a PDF link farm, with many URLs pointing to Shopify domains, likely an attempt to disguise malicious activity. No scripts were extracted from this sample.

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=diaphragmatic+breathing+video In PDF document text
    • http://files.savastanospizza.com/uploads/1/3/0/7/130775435/7b6b2b07c5.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/1/0429/7284/0090/files/pisivuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/calculus_1_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/61277929169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/84085431166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/396337748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/lijudexinijazexagefefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1462/0053/files/batman_the_dark_knight_hub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/51925768150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/8025/5397/files/two_dimensional_shapes_and_their_properties.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 1

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_off000069e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E6 5476 bytes
SHA-256: 9715821cd208396afb8884a1a958ce1cad4a0552009bb336e564c14a288139a1
font_01_sfnt_off00007c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 10216 bytes
SHA-256: 0d4f1b9f05a2e3ebcf8a18a4af1bc436f24dd5425d4d2110e1d7ba2328d44166

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