Malicious PDF — malware analysis report

Static analysis result for SHA-256 08f7e6aadcf9f3d6…

MALICIOUS

PDF

32.7 KB Created: 2020-08-18 20:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6104a8db9f696c029236f885c1f9237b SHA-1: 288448a7a17339fb775d823c566e1619e9d9f7dc SHA-256: 08f7e6aadcf9f3d66399545228ff515468cefe548f346becbd722aad75f718ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, suggesting a link farm or SEO manipulation tactic. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of the file.

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=a-+level+chemistry+eileen+ramsden+pdf In PDF document text
    • http://files.jsiglobalinc.com/uploads/1/3/1/3/131398605/wejekujox-tetodupuza-xaweti-jizijadeg.pdfIn PDF document text
    • http://files.newfypoozoo.net/uploads/1/3/0/7/130775934/vapifijubudigojazi.pdfIn PDF document text
    • http://files.annoushkadeightonacupuncture.com/uploads/1/3/1/0/131070851/4372328.pdfIn PDF document text
    • http://files.jrpaddon.com/uploads/1/3/1/3/131398472/beae019bab08ff.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/1/0429/8794/6133/files/25362561047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/input_mapper_ps4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1619/9064/files/41530644223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7794/0886/files/augusto_roa_bastos_el_baldio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/nubugezudakorodap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/casio_scientific_calculator_fx_991ms_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/banker_s_algorithm_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/dekibawekoxuraluvogewozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/tamil_language_learning_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1706/files/windows_media_player_skins.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_off000043ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43ED 5576 bytes
SHA-256: 2d99cb16fed7f295332f9bab32ba93bc073df9a9372524d1d4de41d91bc3792f
font_01_sfnt_off000056c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C9 9192 bytes
SHA-256: 8a7736cc779b1db55f61ea0d000be67f7ad15381290ccc5d39b7fffd5b5346f6

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