Malicious PDF — malware analysis report

Static analysis result for SHA-256 85ec6f8cbf337964…

MALICIOUS

PDF

58.1 KB Created: 2020-08-17 16:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3545903bf74d43d6e9abf511d2999183 SHA-1: 11efc58dc98968d69f330342e5082e616db450dc SHA-256: 85ec6f8cbf337964f74d3e7be9957eddd3e0f89c0bb2fdf802b3a9d36e19a4ac
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that also leads to this redirector. The presence of a link farm and a redirector suggests an attempt to phish for credentials or deliver a secondary payload.

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.com/pify?keyword=django+many+to+many+through+template In PDF document text
    • http://files.thepantry8020.co.uk/uploads/1/3/1/8/131856984/0218e5.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/1/0431/0423/9770/files/emergency_reporting_training_module.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/daxupijiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/83158426780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/my_asus_tablet_wont_apps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4789/2630/files/convert_to_word_nitro_cloud_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5543/9263/files/dimuwuzokepinezupobes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/rojemolojumazosal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/ultimate_history_of_video_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/pediatric_anesthesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/15685412464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9556/0096/files/vba_mid_function.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_off0000940b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x940B 5232 bytes
SHA-256: 43d7be801e4a3e01d732ec23fe9b0f0869e0cad0edf71388b6b226d09a39377a
font_01_sfnt_off0000a5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5BA 17512 bytes
SHA-256: f191fd99703063badece080ab8686ce8594e284c93c55e2a09bdf02c39154c7c

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