Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4b4889cfa79248…

MALICIOUS

PDF

43.2 KB Created: 2020-08-13 21:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc5e28da2eea3662a1765aac97ad9e18 SHA-1: defb0bd6565cdc3010a47b008c196a09305e9142 SHA-256: 6d4b4889cfa7924802a38c9f56ed9734753bdf0ac049e0c3b9fd05df08583c9e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'media player source code' and a malicious URL, reinforcing the phishing pretext. The ML classifier strongly indicated maliciousness.

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=media+player+source+code+in+android+studio In PDF document text
    • http://files.jacquelinedeangelis.com/uploads/1/3/0/8/130814596/depupivaxidif.pdfIn PDF document text
    • http://files.fostercarecoalition.com/uploads/1/3/0/9/130969300/a7a22948ee4b4.pdfIn PDF document text
    • http://files.militariarg.com/uploads/1/3/1/4/131452887/3914427.pdfIn PDF document text
    • http://files.peascommunity.org/uploads/1/3/1/0/131070072/5731030.pdfIn PDF document text
    • http://files.ainslierobertsprints.com/uploads/1/3/1/6/131606208/suloseta_dowurovum_ranumi_zilugalavabe.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/1/0428/2764/5095/files/mitosis_cell_cycle_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/rixesazinekize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/96106613478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1571/4469/files/jacksmith_hacked_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3449/9479/files/molebudoninunene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/67021288162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/19303552742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/39828656610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/refakomunulop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/24597072523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/59604232076.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_off00006637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6637 5176 bytes
SHA-256: 8c9ae02b1ad75f1fd43f242a73c6fe71bede7cdc110922ce827875f5a6036364
font_01_sfnt_off000077e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E4 11160 bytes
SHA-256: 6578d6092be0a46b0166628be4e7872bc9c1191f660c722cbce4f18d1896b1f2

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