Malicious PDF — malware analysis report

Static analysis result for SHA-256 205c8ff5798ffb43…

MALICIOUS

PDF

45.1 KB Created: 2020-08-06 18:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d24faf0999efdf22a3a8f97a6d562385 SHA-1: 13e5768bd7fa9277f510ca6ba58080ed6dc1a723 SHA-256: 205c8ff5798ffb43bd8cbcfaf142578b6cc2de84c09c6ad4be0b4ab8ace2c08a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Analisis de riesgo del trabajo pdf' and includes the malicious redirector URL. The ML classifier also strongly indicated 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=analisis+de+riesgo+del+trabajo+pdf In PDF document text
    • http://files.6devent.com/uploads/1/3/1/3/131379382/1915674.pdfIn PDF document text
    • http://falezomig.hometowncommunityins.com/uploads/1/3/0/8/130874431/314576.pdfIn PDF document text
    • http://files.timdewittphotography.com/uploads/1/3/0/7/130738956/kavim_filowesiwivuve_lozamuvodim.pdfIn PDF document text
    • http://files.newtonwoodcraft.com/uploads/1/3/0/9/130969080/5318148.pdfIn PDF document text
    • http://files.thomastrevethan.com/uploads/1/3/1/4/131406668/dixanedudo-watuvifikireda-numadil-reteguxeg.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/1/0430/7920/5018/files/kedotapiladaluzimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/kotow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/lewubelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/kigoripopogokuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/buxavugodove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/nugulitimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/kugiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1261/0472/files/rumekififetisatudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/tewapurevame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/rusuposowevumer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/rovoruzow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bases_de_datos_orientados_a_objetos.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 8

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_off000070f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F8 5416 bytes
SHA-256: bddab409055523e6988b92cbbd887477542293ba9b8150de03c29eec17c2ce1b
font_01_sfnt_off0000836e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836E 10636 bytes
SHA-256: ac7902b88733b7f65d2ba42921c97641b7be20a9067f898b8f2a602cc4ccfe01

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