Malicious PDF — malware analysis report

Static analysis result for SHA-256 5444b60a96024567…

MALICIOUS

PDF

40.7 KB Created: 2020-08-27 15:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cdbe8929372fe74820b93d0e159e909a SHA-1: e6e39f78b4dbb71ab95ab37cf367551fb0db2329 SHA-256: 5444b60a96024567f5a416eae3880032d9bc830dc2119e7414558d11eadfae83
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring the user to click on a link, which then redirects to malicious infrastructure. No scripts were extracted from this sample, limiting the ability to determine further payload delivery or persistence mechanisms.

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=tipos+de+psicosis+pdf In PDF document text
    • http://files.colandrcommunity.com/uploads/1/3/2/3/132302859/pijegadunefixulumol.pdfIn PDF document text
    • http://todot.theequineapproach.com/uploads/1/3/1/3/131379732/fagojukoxul.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/1/0428/0877/0726/files/gafefidebiniwekumobozas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/wuzafejaponegegifoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7867/1779/files/62504117296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4147/0117/files/delivery_manager_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/what_are_cracked_minecraft_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5555/3443/files/avengement_movie_soundtrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5838/0450/files/libulubosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/fuxuwoxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/26927721459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/57643611528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/microsoft_project_torrents.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 2

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_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 4760 bytes
SHA-256: 9f868071dcbee1a8c93dcf8a56b16e8d51c3375bf3a7de1d12892a8ed1223a5d
font_01_sfnt_off000074f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F9 9796 bytes
SHA-256: 328b5168fd154eae4065ef8cb77d8ef3a12bf02ae10b545f5fdc5a7369b354bd

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