Malicious PDF — malware analysis report

Static analysis result for SHA-256 448fff6cde97c9d7…

MALICIOUS

PDF

45.5 KB Created: 2020-08-08 02:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cd4620b2bb0a17e804b9ac6f6e8a49b SHA-1: aa6ce085b8f0afeebfe5542d003a82dc4da65fcd SHA-256: 448fff6cde97c9d797e4d7ca00f8ea5b389eda8139ee848ad67d125471857043
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/pify?keyword=farmaci+antiaritmici+pdf', is flagged as a malicious redirector. The document body, though heavily corrupted, contains fragments of URLs and text that suggest a lure related to 'farmaci antiaritmici pdf'. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=farmaci+antiaritmici+pdf In PDF document text
    • http://tilawun.freetodreamvacay.com/uploads/1/3/0/7/130739430/3102629.pdfIn PDF document text
    • http://files.setthestagecostumesprops.com/uploads/1/3/0/7/130775011/voxubozakudukugabub.pdfIn PDF document text
    • http://files.pmcpaintingscom.com/uploads/1/3/0/7/130776204/degupor.pdfIn PDF document text
    • http://files.spectrumoilfieldsupplies.com/uploads/1/3/0/8/130813899/demolozevakofow_duzotixasufesug_vebajisoxir.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/1/0432/3403/3824/files/79464362012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/simple_business_plan_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/dafixomipopilusonasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/zopivukudefakasukusax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/vefepinirorobexalit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/94526414343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/58276649360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/disipoxanoguvawugaxuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7192/files/katimemeduwaboledezumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/genero_lirico_subgeneros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/1305960408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/30663142782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/49441278267.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_off0000740d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740D 5044 bytes
SHA-256: 0e1ec1504051c96a457a5f535394662a65fa01367b6182c41b8c3d5193404ca3
font_01_sfnt_off00008526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8526 10988 bytes
SHA-256: be75cae1e64352984c4667b11772a33b43b0cd32585946b94a5e340a382e26d7

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