Malicious PDF — malware analysis report

Static analysis result for SHA-256 4702a8a729ae329d…

MALICIOUS

PDF

35.4 KB Created: 2020-08-10 17:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6cd19c894fe189b2a3be9dc734e7102 SHA-1: 2298852526f6bf62419a5f445806d3bc78f87d7f SHA-256: 4702a8a729ae329d53e633928a8db07272d725b087324f3549fc34f6a8cc866d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though obfuscated, contains the same URL as the malicious redirector, indicating a clear intent to lure users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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=collocation+method+pdf In PDF document text
    • http://files.christinefrankdesigns.com/uploads/1/3/1/1/131164488/5742449.pdfIn PDF document text
    • http://files.joveneslibres.org/uploads/1/3/1/0/131069887/f9f0aba6ef.pdfIn PDF document text
    • http://files.phhsl.co.uk/uploads/1/3/2/6/132681672/2982381.pdfIn PDF document text
    • http://files.joselinehardrick.com/uploads/1/3/1/4/131453990/bibibasadegajenibe.pdfIn PDF document text
    • http://files.koppelmun.com/uploads/1/3/1/6/131636825/jasoxawo.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/1/0432/7515/7670/files/jopodupamokugokalevovamot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/49499902728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4157/8399/files/pdf_file_online_merge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0486/2374/files/90539975585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/perimeter_and_area_word_problems_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/14900729688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/pidasorisagikowofikukuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/11776076414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7982/files/sinedasekesavikinodabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0791/6707/files/vagiseju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8024/4643/files/xulasibojujelexejam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/67535697455.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_off00004d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D3E 5024 bytes
SHA-256: 000b95a6ba39c6df73a85255b9a384853c3451474096707368488ffbcd8d90ac
font_01_sfnt_off00005e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 10216 bytes
SHA-256: bac3b5b53f3b7b183735d0324e41bd01ec880cc271a9bc8a5574db187cb64f5d

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