Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcf4207996b0e62…

MALICIOUS

PDF

46.0 KB Created: 2020-08-27 15:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 611ae41bf79609adf885e4016b874f97 SHA-1: cd61001b5220489e8376b31172637da42182f401 SHA-256: 7bcf4207996b0e629cb8bfe9b8c07ff99f4e91c3e823c1423a3f0bceaaf09f90
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=hip+stretches+for+runners'. This indicates a link farm or phishing lure, likely attempting to redirect users to malicious content or exploit kits. The ML classifier strongly supports the malicious nature of this PDF.

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=hip+stretches+for+runners In PDF document text
    • http://files.typfy.com/uploads/1/3/1/4/131437689/zakovokipupopomanid.pdfIn PDF document text
    • http://files.blog.everythingconnects.org/uploads/1/3/0/8/130814297/fidodapunixugut_gutekovabawun_kutinaxo.pdfIn PDF document text
    • http://files.newwoodfordhs.com/uploads/1/3/0/8/130813645/bcabcfeecafbe.pdfIn PDF document text
    • http://mupoju.1stpresbyterianiselin.org/uploads/1/3/1/6/131637240/zuwiluxepof-gijusiteni-balirixugesan-lesak.pdfIn PDF document text
    • http://wifuviwa.aerofamilyhealth.com/uploads/1/3/1/6/131606407/1168144.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/1/0431/5096/6950/files/livre_guide_touristique_new_york.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/18258985817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/mimekisufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/573372864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/transformers_g1_characters_autobots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/2936221180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/82487988687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4981/8024/files/calculus_single_and_multivariable_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1336/6182/files/logo_quiz_ultimate_answers_level_41.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/72499053999.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 5

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_off00006b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 4704 bytes
SHA-256: facfa5b8c43cc566840d355d7219f4ee0faa77b6c203d2f5993c2f86f191576e
font_01_sfnt_off00007b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B05 10008 bytes
SHA-256: 8710d06d4fe7dd0a388a280699e7e6c117cf70b79070d8b26cbe33b4c1795d04
font_02_sfnt_off00009d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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