Malicious PDF — malware analysis report

Static analysis result for SHA-256 4889de85180200b4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 11:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 444ec858000f13999ba87adde7454e54 SHA-1: 28233b99ab5a6d067ef39f39ddfdea9219b6e606 SHA-256: 4889de85180200b47be8d30542e1e0f9b61e541680798e322ac00e0cf5776df9
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to lead users to malicious content through a link farm and a primary malicious URL.

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.cc/pify?keyword=exercicios+gimnospermas+e+angiospermas+pdf In PDF document text
    • http://files.oakparkfriends.org/uploads/1/3/1/8/131855992/f5850fe3c233b48.pdfIn PDF document text
    • http://jajogi.higherheightsyouth.org/uploads/1/3/2/6/132683014/252c40c4f50.pdfIn PDF document text
    • http://files.tatancahealth.com/uploads/1/3/1/6/131606121/suvekurogozine_jeraxarenok_fozapila_vuviginimi.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/1/0431/6053/5196/files/97108884403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9981/4040/files/atlas_de_microbiologia_veterinaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/james_patterson_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/muluguzelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/criminal_law_book_2_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1883/8435/files/52855235144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/psoriasis_vulgaris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/alt_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7914/5374/files/vifixomojexanali.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_off000060ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 5468 bytes
SHA-256: 991d99d9d0c7772b482463db7295750e1fb5d9320f86300486de407715290d75
font_01_sfnt_off00007359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 9728 bytes
SHA-256: ab6019c64fe29a5b72ebf2f3c761abf2e9205a90d48b7f94e5c58400257b4c16

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