Malicious PDF — malware analysis report

Static analysis result for SHA-256 a057baf7db4cdd2b…

MALICIOUS

PDF

44.5 KB Created: 2020-08-17 02:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4524448d96ca1fbd8152375db21a7eee SHA-1: 7b0e3a5c7fce2c9fdc678c51461c208bafecd14f SHA-256: a057baf7db4cdd2b5f12d1ef9a2cd85a0e6378b66c3d345da1b37d655b390098
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, with the primary one being a redirector. The document body, though heavily obfuscated, contains text related to organizational charts and a URL that matches the malicious redirector found in the heuristics. This suggests the document is designed to trick users into clicking the link, likely leading to a further stage of attack.

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=organizational+chart+hierarchy+templates In PDF document text
    • http://mowapumuw.glassplaqueawards.com/uploads/1/3/0/7/130775934/xaxilajale.pdfIn PDF document text
    • http://nebax.stjosephmissions.org/uploads/1/3/2/6/132681352/figuropag-kukujusuxivupe-xapiwudenejiwu.pdfIn PDF document text
    • http://files.sekulas.com/uploads/1/3/1/0/131070488/medomisutotup_dabaxalifositun_fudek.pdfIn PDF document text
    • http://files.koosdesign.com/uploads/1/3/1/4/131437567/df0ad6e047fd1.pdfIn PDF document text
    • http://files.sophie-eleanor-photography.com/uploads/1/3/1/3/131379781/9691710.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/1/0437/7329/6789/files/fezixosowin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/xadakagupunopezes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/zozufoxet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/93026722580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3920/3229/files/4083547783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/4089399014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/37715125574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7598/3778/files/52010819183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/fimirenejiwojetimaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/fatene.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 7

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_off00006fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC0 5524 bytes
SHA-256: 07e97670b88207fc3211087f250a467b27378904c789e561d066b9ee11481887
font_01_sfnt_off0000826a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826A 9944 bytes
SHA-256: da32381841521c50bb926f89a20493003f99bd67aba65b5c171d1ec127f6235d

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