Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b5fdcb212d608f2…

MALICIOUS

PDF

44.0 KB Created: 2020-08-01 19:16:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f48e72d0f8711055950b1d9faf6238d3 SHA-1: b762372d8dad13bc1211e277e6f45a1613339230 SHA-256: 9b5fdcb212d608f28610a2182657a75fc93cd5a156d5de8e5f72e22d6b5b559b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a link farm designed to appear as a software download, specifically 'refx nexus 2 download crack zip'. This is a common lure to trick users into downloading malicious content. The presence of a critical heuristic for a malicious redirector link and a password-protected archive lure strongly suggests this document is part of a delivery chain. The document body, though heavily obfuscated, contains the primary malicious URL and several other PDF links, likely part of the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=refx+nexus+2+download+crack+zip In PDF document text
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdfIn PDF document text
    • http://files.healthyforestcoalition.ca/uploads/1/3/1/3/131398219/rugivawix.pdfIn PDF document text
    • http://files.entertheforge.com/uploads/1/3/0/7/130739654/2624386.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/dejovilagelubeguzuvemuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/luwefukide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/batomonazinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/29156432420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/xaxujujigudopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/dobefesatafox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19836568605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0802/2938/files/92538083653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4031/6311/files/93972176971.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_off00005fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA0 5364 bytes
SHA-256: 5dd4651844fdbfb8c57f5fc8748e52f1248c4c8dc1646212b12e137f258167d2
font_01_sfnt_off0000720e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x720E 10252 bytes
SHA-256: 463ed289db76e99d68c59c78db99c6bf0f6bcb3695d1fba46dd0043c8788b73d
font_02_sfnt_off0000952c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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