Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8681db5d7f4be02…

MALICIOUS

PDF

38.8 KB Created: 2020-08-06 17:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8cd0a931cd09410d6d6883cc2edcb6b1 SHA-1: ee1ceb95fdd5cefc7fb9d65654bbf29a4bc5f9c3 SHA-256: c8681db5d7f4be02620466c5287a3e1fba740dc1772dad64a4b12929e0ec3fea
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Mergers acquisitions and corporate restructurings' and includes the malicious URL. This suggests the PDF is designed to trick users into visiting a malicious site by appearing to offer a relevant document.

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=mergers+acquisitions+and+corporate+restructurings+wiley+corporate+f+a+pdf In PDF document text
    • http://files.bleedingheartsbotanicals.com/uploads/1/3/0/8/130874575/fotogerujujerez.pdfIn PDF document text
    • http://files.kellyhosts.com/uploads/1/3/0/9/130968996/guwokimejuk.pdfIn PDF document text
    • http://files.joshraftery.com/uploads/1/3/1/4/131453432/mizib.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/1/0433/4059/5352/files/wokaxinifuzufeviguxofuzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4091/3046/files/13030587109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0081/6028/files/fly_tying_knots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/1947_dodge_truck_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3767/1075/files/gafironalagesogaxatixufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/80411353357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/barney_i_love_you_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9552/3485/files/zorapeboboma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6957/8147/files/semajudilufupugapukeniro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/20748067221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6030/5825/files/5250206816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/likuvewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4687/8882/files/32883167301.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54D7 5648 bytes
SHA-256: ee2b96dfb619215073aabda993459679f4aaf945363e2688210b8aed3df33472
font_01_sfnt_off0000683f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683F 10288 bytes
SHA-256: ca35e994974544208d9cd1a6bd2887746ecb40252dca97c8ed7a5031285b00aa

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