Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a48bb95d69be37…

MALICIOUS

PDF

45.4 KB Created: 2020-08-25 00:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7dd861e53f1e5618841233456e2eede3 SHA-1: 9c7496d12ad2bdb621bb4db773f61792b8abf413 SHA-256: 36a48bb95d69be3780aabf9218d049ea1a1dff461f64d45e19d399e245ecddae
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a lab report, potentially serving as a lure. The presence of numerous links suggests an attempt to manipulate search engine results or redirect users to malicious content.

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=friction+factor+for+smooth+pipe+lab+report In PDF document text
    • http://files.legacystrategy.com/uploads/1/3/0/8/130814475/a1ace6.pdfIn PDF document text
    • http://files.traditionallaycarmelites.com/uploads/1/3/0/7/130775634/rixovilabeladof_nifarasokurexif.pdfIn PDF document text
    • http://jezezotat.westervilletherapy.com/uploads/1/3/2/6/132683286/wafutakajuxobop_jamamodamuw_bujoluto_nasopuvo.pdfIn PDF document text
    • http://files.windsweptpoodles.com/uploads/1/3/0/7/130776536/6316954.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/1/0438/2559/4530/files/18473929450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3011/7526/files/descargar_libro_caballo_de_troya_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/18181611333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/insurance_company_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4234/8949/files/karenowupivokijenereka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/bazinedudadivininirusone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/58909500577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8498/files/25214273241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/42426039002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0986/7929/files/85764222353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/43378803924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/ulcerative_colitis_guidelines_pediatrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/nodudimupovomobewexo.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_off000069a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A0 5352 bytes
SHA-256: eb2796a60fcd37929b8ee2627b693f590cff9a60f80f0f1ce96374a9dcd3dea2
font_01_sfnt_off00007b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9D 14400 bytes
SHA-256: 1d9060975e9da69c09416be0f430cc40e7c7ad9da7d4a076701fc841047cc910

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