Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1839890aad895a8…

MALICIOUS

PDF

49.3 KB Created: 2020-08-25 20:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9eab11d8ffca1d8301ae3a38e0d02dee SHA-1: 3b1e64011d28826224c0dc0bb26c8e3bb2615d43 SHA-256: f1839890aad895a8e9ad88b6a86a709e57348a718bb08db3fe43a4607e9cbe8a
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure related to a book title, and the embedded URL is a redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm or distribution mechanism. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

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.me/pify?keyword=the+lucky+one+nicholas+sparks+book+r In PDF document text
    • http://files.lilymariecreative.com/uploads/1/3/1/8/131856212/juzefumuvitap-lipiribuzi-pujer.pdfIn PDF document text
    • http://files.acc-hsg.org/uploads/1/3/1/6/131636612/1840977.pdfIn PDF document text
    • http://files.gowersartclass.com/uploads/1/3/1/3/131380687/diroxewulemixom_mopoke.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/1/0440/4094/5829/files/2505145309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/8281761240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/9664/0407/files/acordes_guitarra_facil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/bwv_578_organ.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/11589242452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/blender_animation_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1150/5302/files/digital_electronics_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/86782448153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/bible_quiz_questions_and_answers_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fasexerogetotano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/tapirewujax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/free_tv_service_manuals.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 6

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_off0000764f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764F 5080 bytes
SHA-256: eb91ba335d89864e88cbda3e43c7d757b504162a4a1dc0c83df7ee7b6fc2e38a
font_01_sfnt_off0000877f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877F 9992 bytes
SHA-256: 3296d6a1a6b5f291ccc729950b151907adb39e0f2f509e3119584dedcb9468fd
font_02_sfnt_off0000a9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B8 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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