Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d00ac6198ab0a9…

MALICIOUS

PDF

42.6 KB Created: 2020-08-12 09:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e746a7aa17708625807939591745796b SHA-1: 14c3d9177fe5049d1dd70e040b15b87c24799a33 SHA-256: 88d00ac6198ab0a938e5d236bb6994d1b2d58d5cfc3f20362ecfa9c63e8bfaa6
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create a link farm, with a primary redirector pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users into clicking it for a supposed free download. The ML classifier strongly indicates maliciousness.

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=phytochemical+functional+foods+pdf In PDF document text
    • http://files.daonrestaurant.com/uploads/1/3/0/9/130969489/wagufoxalasimoz.pdfIn PDF document text
    • http://rofimoxol.crumblesbynicole.com/uploads/1/3/1/4/131483068/327090db1.pdfIn PDF document text
    • http://kagupor.magsaysaywecare.com/uploads/1/3/1/8/131856271/fuzuv.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/1/0437/4164/2906/files/72149653362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/dofakuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6230/3637/files/el_cantar_de_roldan_resumen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/88025724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/baxupuzunudado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71062637782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6244/3683/files/weromupizimexitedegurefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/ordering_cost_and_carrying_cost.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6884/2393/files/logabevakekosutabivugajod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8841/8718/files/majoditaginegoxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/forijapabufomibabod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/15060400086.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_off000066ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EC 5404 bytes
SHA-256: cde33e71edadb3db225ef27ac6046f706ec23d3b301936adfd9501e9ede72411
font_01_sfnt_off00007930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7930 10640 bytes
SHA-256: 61baa38fd7bcadd303f3763624a615768423d2eee5fdda39a775fec620b42937

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