Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15460b497a65665…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 02:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41cbf5808d7ffae9a23aad12e5d3cff3 SHA-1: c57e41ebf7f1e6007bc7078e4af33d6e89a462b2 SHA-256: e15460b497a6566522f773056aef343c5eb159236ff0b664d2cf88bc61f2124e
194 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body suggests a lure related to 'Causes of World War II worksheet answers', intended to trick the user into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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=causes+of+world+war+ii+worksheet+answers In PDF document text
    • http://mawagexe.foodrefusal.co.uk/uploads/1/3/1/3/131380500/kixapu.pdfIn PDF document text
    • http://files.cvubaseball.com/uploads/1/3/0/8/130874359/a0e74.pdfIn PDF document text
    • http://files.stmaryschurchlangho.org/uploads/1/3/1/8/131856158/vivebuzejijo.pdfIn PDF document text
    • http://files.lizstameymassage.com/uploads/1/3/1/4/131406717/9167399.pdfIn PDF document text
    • http://files.heartofcoloradofiberartsguild.org/uploads/1/3/1/8/131872070/2506257.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/1/0431/7921/2959/files/free_template_joomla_quickstart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/judobupekija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/fevavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/85049819874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0686/0187/files/pisoladelatodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/kisojepawaxuguzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0132/3420/files/printable_fairy_tales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8938/6901/files/zewix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/synology_ext4_vs_btrfs_performance.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 8

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_off000055d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D3 5056 bytes
SHA-256: ae30efd19c281c4b90437e4ec2da48f46d6f8dd1cc7c96cff6c5a15a3e9346f2
font_01_sfnt_off0000670d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670D 10548 bytes
SHA-256: 647004746f40c2521b59312167f26c5f0c006395646dfb84bbb81e7dbbacc793

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