Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d41f8c7e2cf9347…

MALICIOUS

PDF

50.6 KB Created: 2020-08-04 00:23:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8426c14727df0c4dd57af8344170da3c SHA-1: 883c1a0591c039f3825d641c54093772373faf24 SHA-256: 7d41f8c7e2cf9347067fded18c14d70656042cd215b8a793819e26ba37a31544
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to appear as legitimate downloads, but it redirects to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous links suggests an attempt to distribute malware or phish for credentials. The primary malicious IOC is the redirector URL.

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=asme+b16.+9+standard+pdf In PDF document text
    • http://files.gospelkc.org/uploads/1/3/0/8/130814208/vurawadoxalofub-tavimudu.pdfIn PDF document text
    • http://sodobutib.tiffanymcfaddenrd.com/uploads/1/3/0/8/130813577/c246267981676.pdfIn PDF document text
    • http://files.frontporchimports.com/uploads/1/3/2/6/132695387/mizuxukiwimipor.pdfIn PDF document text
    • http://files.roblightbody.com/uploads/1/3/1/6/131636775/xabukoguru_soxameremapuk_nonibewajuki_xogesam.pdfIn PDF document text
    • http://files.helenkurkjian.com/uploads/1/3/0/7/130776338/rezuxijejojaj-lemes-zobavulen-xixegewutedasa.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/1/0433/8846/9411/files/16739370785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6174/6595/files/patas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/88246546322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/bipiwojemilenabido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/bionic_leg_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/42420278882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1927/0306/files/vilorenojunoninolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mirogorozizodixomalejog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/23374492732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/68698529916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/nufefirera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/56066952418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/http_filesify_com_t2bgbe_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8339/1395/files/juletapubiv.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 3

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_off00008833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8833 5680 bytes
SHA-256: 392623cc656bdf50c91033a6e35c6ffdedd9ed5cd8b107b8e6d57f7b1e6fc0bf
font_01_sfnt_off00009b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B70 9980 bytes
SHA-256: 1f062d1b82ad15ca848fddc124101342bb895f0ec73cb98b77851055f687d50f

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