Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2592c5caf9ebf3c…

MALICIOUS

PDF

57.3 KB Created: 2020-08-09 23:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 744c646a439aa01447c6ae1da460c9c3 SHA-1: 90bef03d535889d65e045cd431c62f84581fea2c SHA-256: e2592c5caf9ebf3cb5c6a786f0bf6acc5f784ca35c084d1208fa2f5b2d6220be
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, masquerading as a piano sheet music download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the redirection to known malicious infrastructure. The document body, though heavily obfuscated, contains the target URL and references to 'wkhtmltopdf', suggesting it was generated by a tool. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, common in phishing or spam campaigns.

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=pirates+of+the+caribbean+theme+easy+piano+pdf In PDF document text
    • http://files.hazelcirclelenses.com/uploads/1/3/1/8/131871902/218e4a483978b4.pdfIn PDF document text
    • http://kerizati.lenreed.com/uploads/1/3/1/0/131070374/rurezulajeserivoriw.pdfIn PDF document text
    • http://files.fermentedteacompany.com/uploads/1/3/1/8/131872178/d8458836b2.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/1/0431/8003/2160/files/zinowumeditumota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5390/8117/files/possessive_nouns_worksheets_6th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/steiner_230_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/7870523109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4999/8743/files/beginner_java_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/15071387557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/bakibupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27039997465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/postal_exam_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0209/files/.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB3 4540 bytes
SHA-256: c3dd73a9ab25b98bb046f38c7743eca390e13cefab38735619906ebfc3f297ba
font_01_sfnt_off00009d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6F 5604 bytes
SHA-256: 6752ddc4b1bfd2dbd4cb00d5d7ffb3dcaa0d2d71b8fafd59eebda03346b4ff8d
font_02_sfnt_off0000b051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB051 11632 bytes
SHA-256: 3261cb4fae931e7dd2f3c5b19938cb61241714d589856eaba76a778a4aa44b11

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