Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29fcc63dc96ccd9…

MALICIOUS

PDF

42.2 KB Created: 2020-07-28 00:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 860dc549697e69e5223199dc6c323018 SHA-1: 033453918992aaa93f37334e998dc5a13da1b881 SHA-256: a29fcc63dc96ccd90e74b3bd56443e530f40044d9f9d841ef0544a40db56ad69
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to educational content, likely a lure. The presence of numerous links suggests an attempt to manipulate search engine rankings or to distribute malicious content through a link farm.

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=compare+and+contrast+worksheets+for+third+grade In PDF document text
    • http://files.njsaferatios.com/uploads/1/3/1/4/131453463/lemudasud.pdfIn PDF document text
    • http://files.asrpci.org/uploads/1/3/1/6/131606046/vukim-kufekosomeg-setipokibi.pdfIn PDF document text
    • http://files.360visualhome.com/uploads/1/3/0/7/130740257/toxajiborupinesujad.pdfIn PDF document text
    • http://files.holynativityweymouth.org/uploads/1/3/1/1/131164308/1613852.pdfIn PDF document text
    • http://files.greggrussellstudio.com/uploads/1/3/1/4/131407965/povewewibubozesap.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/1/0431/6309/1112/files/janemefobixetibosami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/6519760742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0703/1966/files/55615290768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/1685638783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3554/2182/files/71859421865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/woxogujedaledaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/mukevafuzujaxoxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/73190448107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/60414617239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6918/files/nuvasiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/88302610077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/zobigebiguf.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_off000065f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 5504 bytes
SHA-256: 7f6f8fdb43e317dd8c42880935ac0aa239349d5f829eda63de18ffb83422758b
font_01_sfnt_off00007894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7894 10164 bytes
SHA-256: a04a0e02cf83e881028df4f6300228d4e45f15ab8228ad25af79da9671023bed

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