Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e739a76a78a837…

MALICIOUS

PDF

57.5 KB Created: 2020-08-05 16:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 610b1179b0e8f7f665d672b16a76f7a0 SHA-1: 4691817cccf2f02b0b0f47d1f52daee10f95a92e SHA-256: a6e739a76a78a83703bdd654e3dfa7ab25ef88d19045750e366e8a6746479967
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'El neoliberalismo definicion pdf' and includes the malicious URL. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=el+neoliberalismo+definicion+pdf In PDF document text
    • http://files.mcculleycuppan.com/uploads/1/3/0/8/130874554/zanevuvitukafizij.pdfIn PDF document text
    • http://files.nextgenerationoutfitters.com/uploads/1/3/1/1/131164424/5167630.pdfIn PDF document text
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdfIn PDF document text
    • http://files.xn--ettrfrdjuren-vcb4v.se/uploads/1/3/1/1/131164452/7b2317d00.pdfIn PDF document text
    • http://files.familylavisse.com/uploads/1/3/2/6/132681647/rirevixabakaxep_pafovuwejejisor.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/1/0430/7707/5108/files/12099218577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3263/2730/files/xulotufizanukuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/81698164437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/71174994606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1830/5179/files/sepap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5136/9127/files/basic_writing_skills_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/99244179572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/senow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9072/3487/files/sekafujujigibekugaxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/saxusebiliroworinib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/37785793600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0359/files/fungi_pathogenesis.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_off0000a039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA039 5400 bytes
SHA-256: 085fbb14a4904fd4e104ffd1010b0b1011293f1a547971212c1380c3713deb4b
font_01_sfnt_off0000b27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB27B 11416 bytes
SHA-256: 8f9c0449ade9f86681dab1a58c06fe0d6173616096df3e237c7e7c4ff4361ffe

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