Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecaf594f46ab444…

MALICIOUS

PDF

41.8 KB Created: 2020-07-31 18:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: feca37999e1d6349135287ffff5393f1 SHA-1: b3103c35bddfb2713bda82865c52ad086c91810c SHA-256: 3ecaf594f46ab4440ec29a62e49de9e6b7ba9f03aba3a605da528cecebaaa8a7
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, suggesting an attempt to overwhelm search engines or users with potentially malicious content. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware distribution site.

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=%25D0%25BA%25D0%25B0%25D0%25BA+%25D0%25BD%25D0%25B0%25D0%25B7%25D0%25B2%25D0%25B0%25D1%2582%25D1%258C+%25D1%258D%25D1%2582%25D1%2583+%25D0%25BB%25D1%258E%25D0%25B1%25D0%25BE%25D0%25B2%25D1%258C+2 In PDF document text
    • http://files.ourdivecenter.com/uploads/1/3/1/4/131407135/6359097.pdfIn PDF document text
    • http://files.svtechcfo.com/uploads/1/3/1/4/131406506/6d75637a2ed00ab.pdfIn PDF document text
    • http://files.oakcreekfootball.com/uploads/1/3/1/3/131379828/f9a46bda83.pdfIn PDF document text
    • http://files.embcmanning.org/uploads/1/3/1/4/131407944/wukinegipoxelix_rixilusekufud.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/1/0438/8644/4699/files/68782958382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/25220895964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/84676376128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/21354991950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/firurefisetod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/57210803863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8672/5795/files/nasoxaxaxadulim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8773/files/mibemibawaxexapuginas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/32000035536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/kixabitabetubokujodoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3762/0386/files/nebibelinogubub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/palagijolopalitibubutuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/nudere.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_off00005941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5941 5828 bytes
SHA-256: b58c02609121fb2d18bd658bfd9716aa3bad00a684492276520f4597efc05ad1
font_01_sfnt_off00006d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D07 13692 bytes
SHA-256: 7c876af786430b4d6202638798e530dece2ed890c4af356cbf3237457a5c81c8

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