Malicious PDF — malware analysis report

Static analysis result for SHA-256 87b294eed8335bca…

MALICIOUS

PDF

48.7 KB Created: 2020-08-04 07:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: faa57222606bd0812ee3d875baf27c34 SHA-1: afe4dd40bb4791407207855e179c0f07d6cd6990 SHA-256: 87b294eed8335bca3e7069b4e3cf143a5325ffbfc0bfb602da422e250502f2b8
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, redirecting users through a malicious domain. The document body, though obfuscated, contains a URL that points to a redirector, which is a common tactic for phishing and malware distribution. 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.com/pify?keyword=analise+fundamentalista+de+a%25C3%25A7%25C3%25B5es+pdf In PDF document text
    • http://files.workshopinabox.shop/uploads/1/3/1/8/131860787/maxafamanes.pdfIn PDF document text
    • http://files.gercahillibclc.com/uploads/1/3/0/9/130969489/zefugakon_nisogiz.pdfIn PDF document text
    • http://files.bootsieboutique.com/uploads/1/3/1/4/131453267/5444532.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/1/0429/7146/3831/files/potabamusedugolixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/98365980960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/93129861756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/mark_hamill_filmography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/wakiwugodilubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/julevap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/21381931582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3481/8198/files/75390000021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/pitozilepagite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9652/3423/files/love_is_an_open_door_sign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3681/0152/files/72952800750.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 2

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_off00007cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB1 5480 bytes
SHA-256: 5efe524f64c05569222a372958bb19a7db55fcd7268c9ea23a31bae3072d6638
font_01_sfnt_off00008f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F07 12204 bytes
SHA-256: 37096f4c35fbc07eaf28deaae1c8cdab95f359dd73f06e7827bd297ca43881a5

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