Malicious PDF — malware analysis report

Static analysis result for SHA-256 67677df8ba158b52…

MALICIOUS

PDF

49.9 KB Created: 2020-08-22 01:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d00d1f66a2ae90cd621bdd0de82819e9 SHA-1: f050f576564d63d9b682fc0ac123b186d5ba80fa SHA-256: 67677df8ba158b52480c91ffd55cb5fd696381e8a492a09b1dd69b09fd3a6f0f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector service, identified by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The ML classifier also strongly indicated maliciousness. The embedded document body text, though heavily garbled, contains a URL that matches the redirector found in the heuristics, suggesting a phishing or scam lure for free 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=giorgio+agamben+pdf+espa%25C3%25B1ol In PDF document text
    • http://files.championsworship.org/uploads/1/3/1/3/131381021/33edf8fd.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/1/0446/9882/8954/files/adamant_dragon_guide_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/36485758283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/74657097786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/mazaromogezuvunagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/20996862715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/diabetes_en_el_embarazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/summon_mob_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/98589520273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/81856949493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/jegadigijebubepijarezufut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/john_deere_x740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/64634346278.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_off00008191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8191 5744 bytes
SHA-256: 48863fddfad2626ec682fd6a47782e6bc156e685d5c6a0e39a115905ddd72604
font_01_sfnt_off000094bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BD 10552 bytes
SHA-256: 4ef60b72e1b48e375a25256bb98e7a6c00ebd38d5858bb9294fbcec20190a39a

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