Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b64ea6316417de5…

MALICIOUS

PDF

43.8 KB Created: 2020-08-23 12:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a69e77eb3a2abc70c7713f56f29e737a SHA-1: 670258243676bd47e3b112c582cb9fd91e6f30f6 SHA-256: 6b64ea6316417de52ca46828d2bda8b8aca2f1a1c13fa8eee2b3615f5932b336
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate PDF downloads, but they redirect to a malicious URL. The heuristic firings indicate this is a link farm intended to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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=causes+of+unemployment+in+uganda+pdf In PDF document text
    • http://files.lappeusfuneralhome.com/uploads/1/3/1/6/131607103/likozodenote_newaber.pdfIn PDF document text
    • http://pekogelig.vmccoynpcc.com/uploads/1/3/2/7/132740405/1dda018768a11.pdfIn PDF document text
    • http://files.notronmfgsales.com/uploads/1/3/0/7/130776728/xopoxef-dugivibip.pdfIn PDF document text
    • http://luginapok.realsynergycommercial.com/uploads/1/3/1/3/131378970/6016162.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/1/0428/3033/2060/files/43215696423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4872/2583/files/47979355800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/nakaxajurowidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4518/2888/files/17250554462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3296/0409/files/affordable_housing_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/30876609687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/4185/8212/files/xazojisaguvotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/pudusafus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5016/2583/files/pavemuliludowibiwupen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4760/0796/files/loan_application_form_download.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_off00006c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C64 5272 bytes
SHA-256: 00bfdb6d8d0066ade016176625e8ada30194c65ac613bbb12ee4a668a747f279
font_01_sfnt_off00007e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E52 10672 bytes
SHA-256: be5c80661e357c1e4e9dba087587c77f545b3da69b1d8701b3229921d4f60dde

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