Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dee0b0e9ab756d8…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 04:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c7c1fda3c11e8cf47c5987823815744 SHA-1: 33b6d0fe8c4d2ca3afe4d36a265422d781f64d95 SHA-256: 8dee0b0e9ab756d830d8a350b436b68d18a5d84271f0121f0e69494f34fadb49
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=jurnal+ageratum+conyzoides+pdf'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of many links to Shopify-hosted PDFs suggests an attempt to blend in with legitimate content while distributing malicious links.

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=jurnal+ageratum+conyzoides+pdf In PDF document text
    • http://tisun.poysontee.com/uploads/1/3/0/7/130774982/4194028.pdfIn PDF document text
    • http://goramo.winstonswisheducation.com/uploads/1/3/1/0/131070054/5104841b3.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/1/0434/3398/4162/files/el_libro_del_alquimista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/sword_hunter_badge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8115/2152/files/moduzixezurusitaligikepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9186/8313/files/ruxatapamejusejuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/xibarezagolajelisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/8166177649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6059/9701/files/best_business_plan_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/formato_certificado_medico_imss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2280/files/94525756436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5982/2243/files/wedoluzemulotafixudanaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/ponuvigabakubowowaxisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/febofavevorejadefaxubo.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_off0000649f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649F 5616 bytes
SHA-256: e39c3740eacafb85830dadcefe995a663daba6c246686f64a77c1487239e21a6
font_01_sfnt_off000077b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B4 11960 bytes
SHA-256: 4e8d2af2f784064a03a4b5c8afea898b72af44da21a740bedf15fa29b05f2dc1

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