Malicious PDF — malware analysis report

Static analysis result for SHA-256 829de134057fa64a…

MALICIOUS

PDF

33.2 KB Created: 2020-08-07 06:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccc8a31ff659a53cbb7076f6459dc44a SHA-1: c869010deea91e5630a8c990547d1a36c7eed490 SHA-256: 829de134057fa64a39be3bfa35c270a920797f15be2514864a5415d425dcfde3
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, indicating an attempt to lead the user to malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the redirector URL and several other URLs, some of which are benign Shopify links, likely used to mask the malicious intent. No scripts were extracted, but the presence of malicious links is sufficient evidence of a phishing or redirection attack.

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=bistronomy+french+food+unbound+pdf In PDF document text
    • http://files.dewsburymassagetherapy.com/uploads/1/3/2/6/132681772/2380285.pdfIn PDF document text
    • http://files.alicebeecherpoetry.org/uploads/1/3/1/3/131383754/kedojumimalas.pdfIn PDF document text
    • http://files.motherworkscville.com/uploads/1/3/2/7/132741109/ririb_gokomado_rutudapejejifu.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/1/0432/1512/6692/files/61144107222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8597/8013/files/18127818018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1093/3414/files/27411687233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/wedding_dress_sewing_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/pdf_bestand_comprimeren_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4368/2469/files/jozorifedeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4273/2192/files/42332730526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0319/files/wafubaxanabejos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/fiber_optic_communications_palais_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/dilefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/35429146875.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_off000045bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45BB 5444 bytes
SHA-256: 3e8fda217a4552496979de16071fb913550644638c13df16979c942966dc5a69
font_01_sfnt_off00005822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5822 9308 bytes
SHA-256: 8ed43d3c6c7832b93ee4e7a8fd7871c8b00cd18e5db1ffb3abe50bead99a655f

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