Malicious PDF — malware analysis report

Static analysis result for SHA-256 545e53aeac63e382…

MALICIOUS

PDF

38.6 KB Created: 2020-08-06 05:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fd9b1ab8a7c0fe312ed4f994578d944 SHA-1: f210ceb14a7b4787ce26316650056f8028a38948 SHA-256: 545e53aeac63e382fe64fe6495c1df7838e1e0b7a739e190a19923f3aa6594fb
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=6th+grade+math+vocabulary+worksheets+pdf'. This indicates the document's primary purpose is to redirect users to malicious sites, likely under the guise of providing the advertised worksheets. The presence of a PDF link farm heuristic further supports this, as it suggests the document is designed to distribute links to external content, some of which are malicious. The document body contains obfuscated text and a URL that appears to be part of the redirection chain.

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=6th+grade+math+vocabulary+worksheets+pdf In PDF document text
    • http://files.smartstartdriving.ca/uploads/1/3/0/8/130814408/6543536.pdfIn PDF document text
    • http://sefijepul.heshooktheworld.com/uploads/1/3/1/0/131070161/2033221.pdfIn PDF document text
    • http://files.onemorepagebooksstore.com/uploads/1/3/1/6/131636914/xofokug.pdfIn PDF document text
    • http://files.mrsresler.com/uploads/1/3/1/3/131380847/1c2ed2e96ccb67.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/1/0431/6885/8280/files/53738736550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/capitalismo_monopolista_de_estado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/34676650438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7056/9113/files/rebemawozojozukapuwetet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/tenemox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/fevizavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/vegusilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13164506765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20785775646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/gurefusapojuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2824/files/limuroxategeborajaka.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_off00005739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5739 6088 bytes
SHA-256: 49751b66722bcbdf22b4689859231cdb4b8baa416cf3808ce1261a02bcd939e6
font_01_sfnt_off00006bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD6 9864 bytes
SHA-256: fdd8c24b24c0016c5354111761de5c1914d773cd66504f7630c36b8d695d0715

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