Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df1378e976ac7ce…

MALICIOUS

PDF

59.6 KB Created: 2020-08-22 13:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b2ae4b0cc80d0376cc3f5f817c268234 SHA-1: abd547c4ebeeb81ae4f4ee873733cffd66eaca7f SHA-256: 6df1378e976ac7ce7bfaa671ad223795d9a25b796e4d789886e7a7e41b88b5a6
234 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. The ML classifier also strongly indicated maliciousness. The presence of numerous external PDF links suggests a link farm or SEO abuse tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=insurgency+sandstorm+server+guide In PDF document text
    • http://files.tjeffersoncarey.com/uploads/1/3/0/8/130814172/mujoluwaxabewunun.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/1/0430/2657/9610/files/balancing_chemical_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/rujinejodenabaxexezakeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/marco_de_referencia_arquitectura_empresarial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/puboxokuxokuzudeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9792/2461/files/transistor_amplifier_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9212/files/hemoglobin_a1c_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/nifitagufufusebowis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/dark_souls_2_starting_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/16493664935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/livazupewodirujibipemazuw.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 3

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_off0000a286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA286 5324 bytes
SHA-256: fbdc18eb75775b0c0144f06c966f3950909dd4bda0d7f80ced49c70ca5b215a7
font_01_sfnt_off0000b48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB48B 14624 bytes
SHA-256: cce0646806b4a3752461aea7735f702e033cdd10ea5bab694a54b8a2f7f321a3

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