Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec86894378416195…

MALICIOUS

PDF

46.6 KB Created: 2020-08-23 23:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c4842fbc48763ef051c65ecb302c7e5 SHA-1: e95ec2cb6d588adf34e09ee8c21c111c0010164d SHA-256: ec86894378416195d7b0586fd9eb9f1e79013243e91f3ff5fdd5a1569bf1b627
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=conditionals+1+worksheets+pdf In PDF document text
    • http://files.lilliemaechocolates.com/uploads/1/3/0/7/130739415/kufop.pdfIn PDF document text
    • http://files.citytaper.com/uploads/1/3/2/7/132710795/mokonimubiresi_nawur_loxinonuxur.pdfIn PDF document text
    • http://files.joseixchu-realestate.com/uploads/1/3/1/4/131454373/maladix.pdfIn PDF document text
    • http://raxede.kweenkarecosmetics.com/uploads/1/3/2/6/132681746/6209828.pdfIn PDF document text
    • http://files.whitehousevacationrentals.com/uploads/1/3/1/4/131406344/4a6796659.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/1/0435/7393/6291/files/zetirosugiviwerifivifaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4092/9957/files/onan_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3695/9139/files/48871987549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/xewizukes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/dopowezox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/96729271118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2832/4257/files/gutemabaxirovebuguxawevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7773/8399/files/17916872731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/5e_cr_table.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_off00006af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF4 5148 bytes
SHA-256: 7d6893d9ec909af29e318075718a2c07617a60e6d1b52bf42b47a8a9740a6a91
font_01_sfnt_off00007c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 10192 bytes
SHA-256: 0a0df89390e27a5fb709a9e9f78de79f500017bcf49b475f67e1c0bc9590e37f
font_02_sfnt_off00009f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F6B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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