Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fec9e5d0d5d5f6e…

MALICIOUS

PDF

60.9 KB Created: 2020-08-18 13:24:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9610ff6ecf8d26bd22d117c76a820b78 SHA-1: f992e1e9e181eb4309a3b8bdda007af53daa451a SHA-256: 4fec9e5d0d5d5f6eca737abc7822d63529ac89531393cba6b128aed830e818c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a mass of external links, including one to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'free prenuptial agreement template word' and the malicious URL. The primary attack vector appears to be a social engineering lure to trick users into clicking the malicious link, which is then used to redirect them to further malicious content.

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=free+prenuptial+agreement+template+word In PDF document text
    • http://files.vtxbts.com.au/uploads/1/3/0/8/130874284/numap-narenifegopir-guravofeja-gemukesotepazal.pdfIn PDF document text
    • http://files.lyrikalstorm.org/uploads/1/3/0/7/130740033/4245065.pdfIn PDF document text
    • http://files.amadauniversity.com/uploads/1/3/0/7/130775084/tikefowofoletuw.pdfIn PDF document text
    • http://files.socialdistancingwiththeriggs.com/uploads/1/3/0/7/130775046/vasomopat.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/1/0431/8570/1019/files/nikidavexamejazanozeveme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5641/4363/files/vcredist_x64._exe_2005_sp1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7355/2028/files/4717904542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/kagavabakubojesuzibaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/malinowski_contribution_to_anthropology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/vibiwawimolatapagufib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/tamil_astrology_birth_chart_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/22838830227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1895/9523/files/fuluxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/badolasenomuxilig.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_off0000a6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C9 5148 bytes
SHA-256: 531894822a7c2b3c8532933fe3b1426bd0e66e4f09f42dab0a7b9d6a549d9830
font_01_sfnt_off0000b841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB841 15028 bytes
SHA-256: 18673d25c09f871c51adb5698f6060c088e56a889935a4ddcdc7630ded71686b

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