Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b29bf59dc703875…

MALICIOUS

PDF

42.6 KB Created: 2020-08-04 18:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8710c9d4faff8d120f0eb3c1c948d6b7 SHA-1: 76ef6c3b7b7cc5c5dea13349d413411f64bb7776 SHA-256: 6b29bf59dc703875679f3798ed02c78f4903ac1c32fc22e48c4395188286b474
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service known for hosting malicious content. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure for free downloads, likely leading to malware. The ML classifier strongly indicates maliciousness.

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/wb?keyword=happy%20birthday%20banner%20template%20pdf In PDF document text
    • http://files.kirajewellerickson.com/uploads/1/3/1/3/131381602/zujiwan.pdfIn PDF document text
    • http://files.dmdesignsoc.com/uploads/1/3/0/7/130739616/wolelodaziligi-wokejog-zafurebetefo.pdfIn PDF document text
    • http://files.htscounsellorcorner.com/uploads/1/3/0/8/130814187/bamezurafarubafisas.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/1/0432/4062/0200/files/zajez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0858/1019/files/137208675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/52432661055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/minugavisopuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0348/6103/files/visanegerufigawubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/74626929971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/2986500832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/novaterakatiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/15753009186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/patarakewijuxasokug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/kijadadudaburugiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7299/4971/files/vusofodaxuwaxufogabegiso.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 5

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_off000068fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FD 5308 bytes
SHA-256: b180b889787a16697c5277b70bb80b89e64f83b1dc3c381477b1ea7c88f65688
font_01_sfnt_off00007adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADC 10240 bytes
SHA-256: b9412d76ee40b3dd9a6eb1462046d7eebe9afd09f2df405a48a8a01d330791de

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