Malicious PDF — malware analysis report

Static analysis result for SHA-256 32410881535d3286…

MALICIOUS

PDF

45.4 KB Created: 2020-08-18 18:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69c7bef42b81bad76397267de98f53fa SHA-1: 51e3e9f50ac14606ec3b01022de0902d80489834 SHA-256: 32410881535d328619adc3af133f33f52b2a1c544265a0a71e9d798ead9d9081
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a link farm designed to lure users with deceptive content, such as 'free download' lures. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL.

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=food+website+templates+html In PDF document text
    • http://files.arangillette.com/uploads/1/3/0/7/130776536/judefi-bibam-teganatedenusi.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/1/0432/7967/9646/files/56551922929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/mifeselux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/nursing_care_plan_for_anorectal_malformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/data_analysis_with_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/45508638492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/69916349597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/33976889950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/how_to_divide_complex_numbers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/nulifusuruwoxowebikejaton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2217/8710/files/medical_imaging_signals_and_systems_download.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 1

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_off0000755d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755D 5288 bytes
SHA-256: 12dcda154243b17c91cb74da2b1a62a7fa43f9e016c19a8bfec13ba28c98be4e
font_01_sfnt_off00008745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8745 9884 bytes
SHA-256: 0abfc180988e03a3360af912713719a89a55da6a0453b7fb336c922124a0d0e7

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