Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b9a29d04f4dedd…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 04:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9b793df830ffc27d6eb6e6da3dc9598 SHA-1: b29356bbcfba2445c998c5cf99d961528b1d6b48 SHA-256: 08b9a29d04f4dedd03932253f7edfebfd88576403a6df53ca9ed7035e133c92f
194 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior by embedding a large number of external links, many of which point to a redirector service known for malicious activity. The document's content, 'Check json format is valid or not', appears to be a lure to encourage users to click these links. The embedded links likely lead to further malicious content or phishing pages, and the PDF itself is likely delivered as a spearphishing attachment.

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=check+json+format+is+valid+or+not In PDF document text
    • http://files.slykerfamilyministry.com/uploads/1/3/1/8/131857193/d9a6afdf607a.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/1/0432/6873/5140/files/98700637152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/jewipugekagetuwoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3358/6838/files/88983006324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/61251417603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/52585740727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6173/1743/files/38183117036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7896/7703/files/21070057402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9652/2398/files/11._4_meiosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8724/1119/files/66573158194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/75551013690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/34015761063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2800/4507/files/9464154993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/25168081433.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_off000067c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C6 5364 bytes
SHA-256: d261ffd0f4a90c5afb9a096a4c5fa2c3555383a8f7038b30f4ab864476dbc8e1
font_01_sfnt_off000079d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D8 11264 bytes
SHA-256: 695c6e98d7057a4972cde27257dfc5116a3b511b8cead04c2e91fadb7e273462

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