Malicious PDF — malware analysis report

Static analysis result for SHA-256 e383e2174078724e…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 01:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b17cb654578fa51bba3400bdef8e786 SHA-1: 4fdf72f62b756520fdb1768346df7558b56552f7 SHA-256: e383e2174078724e33ad9db6bae97b2dc50f2154cdc721e29fb3c50791e40f87
194 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The embedded document body text, though partially corrupted, includes the URL that triggered the malicious redirector heuristic. This suggests the document's primary purpose is to redirect users to malicious content via the provided link.

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/wb?keyword=perimeter%20word%20problems%20worksheet%20pdf In PDF document text
    • http://files.melaninlaserclinic.com/uploads/1/3/0/8/130874370/gabif-duwupexuweduj.pdfIn PDF document text
    • http://files.nelsonmota.com/uploads/1/3/1/4/131412032/5611831.pdfIn PDF document text
    • http://files.libbyes.com/uploads/1/3/1/3/131383648/jojuretinexipirilew.pdfIn PDF document text
    • http://foruxuli.hoclincolnorders.com/uploads/1/3/0/8/130874359/22103.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/1/0430/8706/9348/files/kekinutowutekirapodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/95365700235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/61194609363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5951/0424/files/tarajotufuxabuzezig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1204107997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/zigatukinipasopevodibegij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/4108435163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7897/files/nokiliseviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/67500051009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5560/3094/files/59814028961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/tixapalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/jolofanuzexuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/delete_discord_server.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 4

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_off000065f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 5368 bytes
SHA-256: c5844ceff270ec1ee4490c188f45a47edb5b277fb6ef54d5e26e1ef112e9bdd8
font_01_sfnt_off0000781f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x781F 10192 bytes
SHA-256: b4b22b2e255e5712a4376f334d4b393d6e7a1039d0e918a8d84df514299ff7ef

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