Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64918d459a3d360…

MALICIOUS

PDF

41.0 KB Created: 2020-09-18 00:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 208bc0c856a59981c7ea59d262851eb5 SHA-1: ba7493d4dbe9b84245f191c12afed992a3fdb815 SHA-256: e64918d459a3d360e0eb750b429898e36aefcb01787dac1dfebcb0ec74006f6e
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a book title and the malicious URL, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious. 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.me/wix?keyword=battlefield+of+the+mind+2-in-1+book+and+study+guide+pdf In PDF document text
    • http://pexap.lairdnorton.org/uploads/1/3/1/6/131636698/6575631.pdfIn PDF document text
    • http://files.stepfamily.org/uploads/1/3/0/9/130969254/kabomelusugib_sasiraduwazi_beverobam.pdfIn PDF document text
    • http://nepaxu.yesindustrialsupply.com/uploads/1/3/0/9/130969280/212746d.pdfIn PDF document text
    • http://files.krittermall.com/uploads/1/3/1/4/131406286/9684484.pdfIn PDF document text
    • http://files.themouseholewoolery.co.uk/uploads/1/3/2/8/132814146/1112572.pdfIn PDF document text
    • http://gijuzap.blazproject.org/uploads/1/3/1/3/131398455/zubisusin-mapojugedira-lukejogu.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/1/0433/2971/6374/files/83872823110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/lonerekataz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/81278789727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/ripibuxifinexidor.pdfIn PDF document text
    • https://835aead8-8c9b-4ef6-8ca2-88a95d58a486.filesusr.com/ugd/29c71c_07f1dc09b4884dd09bad3f22f51d35ce.pdf?index=trueIn PDF document text
    • https://9b428baf-2960-4fc1-9eaa-d11ada3c4426.filesusr.com/ugd/912de2_522a2f1e332b462db976722294749267.pdf?index=trueIn 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_off00005fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE1 5928 bytes
SHA-256: f62d79ad67fc3bafe72d3a84d3ad52ee10eb584bb7271d199f53303db5b80aec
font_01_sfnt_off00007407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7407 10232 bytes
SHA-256: 26bc1bea705a78dd5ea7cab9ba3dd4d9b2b551bd583e1fda9faac446c02e95d0

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