Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc89c88cf4fa6459…

MALICIOUS

PDF

41.8 KB Created: 2020-08-14 21:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45912e0bb08648976515220e67b55cab SHA-1: 523621c8c6b8a4160111e5c7a29f9d29f57207a1 SHA-256: dc89c88cf4fa645957374c2ba977967335d81d6e5f251034057e4aba4dc3d8c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to domains associated with SEO link farms. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/wb?keyword=osprey%20atmos%2065%20ag%20pack%20owners%20manual. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on various domains, suggesting a phishing or malicious redirection attempt.

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/wb?keyword=osprey%20atmos%2065%20ag%20pack%20owners%20manual In PDF document text
    • http://files.balancespaandyoga.com/uploads/1/3/0/7/130739016/loxodipuzumogazov.pdfIn PDF document text
    • http://files.warwickkentphotos.com/uploads/1/3/0/8/130874683/kuwakukimiz.pdfIn PDF document text
    • http://lekaluvo.peppermintcinema.com/uploads/1/3/0/8/130874642/dozepigiwowal.pdfIn PDF document text
    • http://files.shallyns.com/uploads/1/3/2/6/132696030/80509bf2.pdfIn PDF document text
    • http://files.s-w-p.org/uploads/1/3/1/6/131637529/lafolowumajav.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/1/0428/9835/8432/files/mekokagowofulagifofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/botanica_geral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/cat_quantitative_aptitude_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7660/7390/files/check_your_english_vocabulary_for_ielts_rawdon_wyatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/37378333886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/toxifowefugabejafikifux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/82677467005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/63900194606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/88596324832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/jilivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/taxomalulagawajalez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/7124357477.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_off0000583a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x583A 5816 bytes
SHA-256: b7466d2918606902da21670219204eb0230af3bfc3c2d9fa1933207457f16822
font_01_sfnt_off00006c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0F 15036 bytes
SHA-256: 4e92bda55a3d3efe0d77b3c8ffc4793f28bc3c8d6b73042c4feb32d548de9a21

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