Malicious PDF — malware analysis report

Static analysis result for SHA-256 5590b9f92b34317f…

MALICIOUS

PDF

52.6 KB Created: 2020-08-18 14:00:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 140f2a39a3f4db64ac20f81cae9f44f5 SHA-1: e387a7a768947f22f959281f5c2ef326a2c5126b SHA-256: 5590b9f92b34317fe4389b940bd71983f2378044acb8a3a58e439e18e360b1a1
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=chomsky+normal+form+converter+java'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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=chomsky+normal+form+converter+java In PDF document text
    • http://files.swiftfitnessgroup.co.uk/uploads/1/3/1/4/131409305/4539843.pdfIn PDF document text
    • http://files.zandugandzic.com/uploads/1/3/1/3/131384127/bejizodedabivo.pdfIn PDF document text
    • http://meluvexa.groovevinerecords.com/uploads/1/3/1/4/131438577/6501816.pdfIn PDF document text
    • http://kezuzi.pauledgarcranfill.com/uploads/1/3/2/7/132740405/fbcb5b31a1e77.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/1/0431/4431/5029/files/2794239760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/63610464743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7751/5941/files/folugegivodolowitexirare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/7805121346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/vemefitoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/xinonimubozunupiwoparidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0610/6528/files/transforming_our_world_2020_agenda_for_sustainable_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6805/files/bepujofukon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0612/2393/files/bajodetabezix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/farming_simulator_2015_xbox_360_cheats.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5F 2828 bytes
SHA-256: 4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9
font_01_sfnt_off0000885a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885A 5328 bytes
SHA-256: bc3d6dc690ed128678222fe03e7df54ffef8a514850680145c1b9badf9a420d2
font_02_sfnt_off00009a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A63 13432 bytes
SHA-256: 5721702d2d1d81e65c0be5bba70f26a593961484b0f48a170cda0d2bda8ddfbb

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