Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c3d92e00c455471…

MALICIOUS

PDF

40.1 KB Created: 2020-08-26 21:32:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8215800c2065c4f3f5acff4954c05fc5 SHA-1: e43be9dfc02988b76f36cafe3f13f17a529a8c91 SHA-256: 9c3d92e00c4554717ad48b8e55fe3ca6d25c5137b000c6c58d2173d82d7e7ec0
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, likely intended to lead users to malicious content or phishing sites. The presence of a malicious redirector URL is a strong indicator of malicious intent.

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=atmega328+datasheet+microchip In PDF document text
    • http://files.artlynchactingcoach.com/uploads/1/3/1/3/131380868/tagaxe.pdfIn PDF document text
    • http://files.thediazobserver.com/uploads/1/3/2/7/132740836/nefulet_lagakixufi.pdfIn PDF document text
    • http://vanevow.humanesocietyofdelnorte.org/uploads/1/3/2/8/132814930/gemuvol.pdfIn PDF document text
    • http://niwakuzo.rock-n-water.com/uploads/1/3/1/4/131438044/3036214.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/1/0428/3429/6988/files/mixonavomoxaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/54510697815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6209/9109/files/wordpress_login_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5656/9247/files/84804412492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7162/2559/files/adjetivos_calificativos_en_ingles_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1167/8114/files/lullaby_for_a_princess_sheet_music_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1407/7854/files/mipidis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7832/7199/files/cognitive_psychology_test_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5276/files/lufop.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_off00005db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB9 5936 bytes
SHA-256: 173681f5a8cddd605d0a6f08de52990f89661cb4c67f5dfa307453afe03073f5
font_01_sfnt_off000071bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BB 9920 bytes
SHA-256: 132bd8c1385abdcd5855b06cbffddeb22fefb7b4554d24ed619f16f49d7afa77

Open this report in the interactive analyzer, or submit your own file for analysis.