Malicious PDF — malware analysis report

Static analysis result for SHA-256 8678a9ede9050edb…

MALICIOUS

PDF

46.5 KB Created: 2020-08-09 19:59:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6dc4d7eeb916e66ec08b9bc273942c4 SHA-1: fef5881ff3adec5c013dce23b0837db726a40157 SHA-256: 8678a9ede9050edbfc0231c9046603260ca9ccbd1647a3f85bac0efcf65bfbcd
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a malicious redirector, designed to lure users to external sites. The document body, though heavily obfuscated, contains text related to APA citations and the redirector URL, suggesting a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score indicate 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.com/pify?keyword=apa+format+citation+website+pdf In PDF document text
    • http://files.michimathias.com/uploads/1/3/0/7/130739251/xirexaveresorud-diripanafuru-jikedi.pdfIn PDF document text
    • http://files.centralparkwaysites.com/uploads/1/3/1/4/131454355/ladisikumawukotorazo.pdfIn PDF document text
    • http://files.hallieselinger.com/uploads/1/3/1/4/131437147/4691193.pdfIn PDF document text
    • http://files.mayusaeki.com/uploads/1/3/1/4/131453177/0d76b43dd8b7.pdfIn PDF document text
    • http://files.bohemianrosedesigns.com/uploads/1/3/1/4/131483149/5437cc47ed6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/kujubatepenapubugusajubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/mivukebikofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/83757015424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3110/files/kabunafijafuzanav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/jexiboruraxezamen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/suruvobifuseruzemuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/kesij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/drop_a_tuning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/sworn_affidavit_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/44824293994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/kugazawol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B78 5280 bytes
SHA-256: f2c854d33f962880f6b0b369a753a5fc38b36ae784891c84414df6233c9fdcd8
font_01_sfnt_off00007d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D53 9800 bytes
SHA-256: 9c9b1321b637c40d9749175547824aa59b366173c1cde8527b723521cef8c75d
font_02_sfnt_off00009ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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