Malicious PDF — malware analysis report

Static analysis result for SHA-256 601d569f0456dcf8…

MALICIOUS

PDF

41.2 KB Created: 2020-08-23 13:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 614b90085c86b80f78c198717883ebca SHA-1: 9270d07fd8689f9ae81ba22c8642d3859eab12ee SHA-256: 601d569f0456dcf8fcee398b292f83746bd034a51b888c902507fe5e7da42a34
234 Risk Score

Malware Insights

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

The PDF contains a lure related to 'balancing equations practice 2 answer key' which links to a known malicious redirector. The document body also contains numerous links to various PDF files, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to a phishing or malware distribution attempt.

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.com/pify?keyword=balancing+equations+practice+2+answer+key In PDF document text
    • http://files.message6666.com/uploads/1/3/0/8/130874587/1a3e35af6ec30e.pdfIn PDF document text
    • http://zugigiw.jcschoirs.com/uploads/1/3/1/3/131398140/filawevexad.pdfIn PDF document text
    • http://wexukok.counselingcreativelypllc.com/uploads/1/3/1/6/131606289/rabetinog.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/1/0432/1817/4107/files/xufutunibofizixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/mowipukusevaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0349/5836/files/new_cg_love_song_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4111/9653/files/book_of_mormon_timeline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7051/1521/files/jedetixoxonerobupuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/play_yahtzee_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5964/9429/files/67223456036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9520/3745/files/cyberark_enterprise_password_vault_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0528/files/dasew.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_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 5668 bytes
SHA-256: 0843b4f9a4fb49a5fe9bf617215795914bef54b8a1d6796b9a3c69325cfa0f91
font_01_sfnt_off00007573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7573 10060 bytes
SHA-256: e54c3798dc25b19e8efb37dd2f7206cbcfb5943d46e284fc9605168a58d183ca

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