Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd51a089f9da52d3…

MALICIOUS

PDF

34.1 KB Created: 2020-08-17 00:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8c3c0510c1a92c6326639e0798da315 SHA-1: e7dcf75b522f81543c234fdb25989cdc6656cf3b SHA-256: fd51a089f9da52d3c34c0e2c313120e8596358bf87a7864b1b2ee366a2bc0e1b
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to recruitment and the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or redirection strategy. The ML_NYX_PDF_MALICIOUS heuristic strongly suggests malicious intent.

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=cabinet+de+recrutement+adequation+et+performances In PDF document text
    • http://files.billstrom.ca/uploads/1/3/1/3/131380052/1864127eff24a74.pdfIn PDF document text
    • http://files.charlesablemedicalphysics.com/uploads/1/3/1/4/131413718/soduwusufugowet.pdfIn PDF document text
    • http://xubatam.storybookprincesspartiesny.com/uploads/1/3/1/4/131408209/ce7b497c41b1.pdfIn PDF document text
    • http://files.bucknerinsurance.com/uploads/1/3/1/4/131452803/a10a052a4ac468f.pdfIn PDF document text
    • http://pasekev.ohkdiving.com/uploads/1/3/0/7/130740235/7643531.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/1/0436/9776/6553/files/64691957072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/administrao_financeira_conceitos_bsicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/dalolukularukuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/ejercicios_de_paises_y_nacionalidades_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/51459946037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/gabax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/formato_de_certificado_medico_escolar_dif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/followage_command_nightbot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1863/files/a_valiant_life.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 5

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_off00004843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4843 5440 bytes
SHA-256: d7872e6e45398ce731d331d07536bc8a7bb086d11f68a5a4c28055e4fe63c472
font_01_sfnt_off00005aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA3 9520 bytes
SHA-256: 5285ac0c5dac96dac6f56fc21dc49ab6fe9cf84794898a9391f09d06791821c8

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