Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6c88655c5329f9…

MALICIOUS

PDF

47.2 KB Created: 2020-08-20 09:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f696b6020cc3d27a02c0b5778a6ea1c SHA-1: 8fc809c37457cf60bee9ebba068f89f74e6b6921 SHA-256: ad6c88655c5329f940bab534b047ccab02f48277731f57f0d9a2fafb0484ec56
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ty beanie baby value guide 2019' and the malicious URL, suggesting a lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure. The file was generated by wkhtmltopdf, a tool often used to create PDFs from web content, and contains a large number of external links, indicating a potential SEO poisoning or link farm tactic.

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=ty+beanie+baby+value+guide+2019 In PDF document text
    • http://zulepewi.houghathleticboosterclub.org/uploads/1/3/1/8/131856158/bdaec7d.pdfIn PDF document text
    • http://files.learningsasia.com/uploads/1/3/0/9/130969389/3574405.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/1/0433/6913/6280/files/jabuxogudepunaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1325/files/dofukeropaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/world_important_days_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2230/0822/files/calvinism_versus_arminianism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6415/6314/files/15529303483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/vatojijilurufesixosejinek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/52408553586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/15198654305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/febewexovukaserolaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5712/files/wojoguguwesurobilefeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/25490050623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/eclipse_shortcuts_java.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
🗂 Part of campaign: learningsasia.com 4 samples

Related samples 2

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_off0000790e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790E 5452 bytes
SHA-256: e7e2e2f219c75e77e32f1aa64329cc1b0da450f0b1f5a3b996ef5fcaecac93a1
font_01_sfnt_off00008bb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB9 10524 bytes
SHA-256: 9afaad01fac607a527ba321a52b04174ab8d2da132e23a15bc0f1c0f81a8ad99

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