Malicious PDF — malware analysis report

Static analysis result for SHA-256 f91762776115654a…

MALICIOUS

PDF

58.9 KB Created: 2020-09-19 02:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96f9eda0ba14a200fffd896e1af20fa3 SHA-1: b00a7371d830d3e81c89e030dc2f409b5b3ff4e9 SHA-256: f91762776115654af135aae8e38ef7c6993bb3b855105c3a7d750da88add8272
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, indicating a link farm. One of these links, 'https://ttraff.link/wix?keyword=dios+mios+wiibrew', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL, suggesting a social engineering lure.

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.link/wix?keyword=dios+mios+wiibrew In PDF document text
    • http://files.amommachoosingjoy.com/uploads/1/3/1/4/131407148/5090876.pdfIn PDF document text
    • http://zixuteb.nayastergiou.com/uploads/1/3/0/9/130969383/sanogefoto.pdfIn PDF document text
    • http://files.dumasmuseumandartcenter.org/uploads/1/3/0/7/130740391/0ad52c3a05.pdfIn PDF document text
    • http://files.caitielockhart.com/uploads/1/3/1/3/131383657/pejivovumu-rokasak-badovetagixegop-lapuxedogizev.pdfIn PDF document text
    • http://files.pulaskihealthcarecenter.com/uploads/1/3/0/7/130775145/palawuf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5ce901dc-cc90-4451-b9a5-2a568c84cdfd.filesusr.com/ugd/f1d680_3677c9207ba64051a96963f603f844a6.pdf?index=trueIn PDF document text
    • https://2ea27e57-39a9-4d72-9902-eb6e7f66fb21.filesusr.com/ugd/45fd81_af43fca4dc844462989fbb0e968fcefc.pdf?index=trueIn PDF document text
    • https://89bc95fa-a523-4747-9b55-baa065e23eb0.filesusr.com/ugd/8d5d69_fae0193ec27847918ccd7dd5aa6b2d76.pdf?index=trueIn PDF document text
    • https://c274f54b-c84b-48ba-aaf6-faf9e8e7785c.filesusr.com/ugd/f6a907_4d906c264d6e40e08e9a165f6971f475.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/kisojujimipokudanatudiwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/kefuvudareko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/97110625602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1175/files/50_sombras_mas_oscuras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/formatting_excel_spreadsheet_in_powerpoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/36483529689.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 7

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_off0000a7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D7 4820 bytes
SHA-256: 8432f9a2164ad51fffaf633aad461d8be5bb2069667602ffd3165ae9ed6aca0b
font_01_sfnt_off0000b83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB83A 11296 bytes
SHA-256: c777fcbee41ec5ba9657b76a8459402ed36fcd5062e8cdb1af0047291fbbd2ed

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