Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a07ece10ad04ed…

MALICIOUS

PDF

64.4 KB Created: 2020-08-15 01:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c011d7093c6c6ce80b42691e76b16a85 SHA-1: abbe65303ce4d61a4b51e8690a48004d66742083 SHA-256: 76a07ece10ad04ed5620f2c27716cc92e3da5e37e404a836f200c7b1bd8196b1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector and a link farm. The document body, though heavily obfuscated, contains a URL that matches the identified redirector. This suggests the PDF is designed to lead users to malicious infrastructure, likely for phishing or to download further malware.

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.cc/pify?keyword=bootstrap+4+form+custom+validation+example In PDF document text
    • http://zarefasa.psurochester.com/uploads/1/3/1/4/131407995/5d00e43cc.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/1/0449/9243/0248/files/rodurijekubafedajuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2229/9815/files/kubota_front_end_loader.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5457/8334/files/mukukiwawowuliduvukikimok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/misplaced_modifiers_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/17808225761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/faxagefikobowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/tomidikonorulaxupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/82835242592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/kuvabobegifekisoju.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_off0000ac78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC78 5568 bytes
SHA-256: 7476203f45c4885d31095cd0b3cf4a46b3bd07e174421470cfb0788c158e8f06
font_01_sfnt_off0000bf5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF5D 17248 bytes
SHA-256: ae1b04475ebbf78c9a85be59dc4f3708115caa27e3c14823d9e5658a7e1f0c04

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