Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f75bf4286f28b85…

MALICIOUS

PDF

45.7 KB Created: 2020-08-02 22:38:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a900dccb0a2a5504cbd0c97d99920d39 SHA-1: 5cf4f64fdf40d07e77e27c907621ace4173d6cd4 SHA-256: 7f75bf4286f28b852ada89d0b68ec3d84e2f40bcbfaf3c670cc68ee53a8c1348
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service identified as malicious. The ML classifier strongly indicates maliciousness, and the presence of a link farm suggests an attempt to drive traffic to potentially harmful sites. The document body, though partially garbled, contains a URL that aligns with the malicious redirector.

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=sally+salons+games In PDF document text
    • http://files.manorfieldspark.org/uploads/1/3/0/7/130739132/lopalaziro_niguzuzaloja.pdfIn PDF document text
    • http://files.greenmeadowsbaptistchurch.com/uploads/1/3/0/8/130814258/1127575.pdfIn PDF document text
    • http://files.outloudvideo.com/uploads/1/3/1/6/131606454/sotupumaj-newuxu.pdfIn PDF document text
    • http://files.concretebendoregon.net/uploads/1/3/2/6/132682542/773040.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/1/0433/5003/2549/files/98859039890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/mabibuzim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/complete_guide_to_drawing_from_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/zudatesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5630/0186/files/nalepewituwubazokujudor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/vigojig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/4405368732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/fogozinuxeruwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/41193611203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5591/files/rigutirenatuduwazu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 5116 bytes
SHA-256: a1420cfb9d53623bc915f9cbd6aa6429574b55a7ff245c3418c3d317148177d1
font_01_sfnt_off00007c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C29 1884 bytes
SHA-256: b45c62d5613ddef6e7e0f70851ad0cdbca2410a55d14d40e71b7f596dccccee6
font_02_sfnt_off0000854b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854B 10724 bytes
SHA-256: c8b133ed61f91cf36acdec05d6efd1d74130ffa94c003a4a9d932669276d3b6d

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