Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4a1d125626fd98…

MALICIOUS

PDF

48.5 KB Created: 2020-08-08 23:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b2417fbd3a0a650569686141ac938c3 SHA-1: cc37b866a7ca26633d908ddf51ef4a03544bf59f SHA-256: ea4a1d125626fd98de3154453816505178b26cd9422cab089696bc0160f5c6a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to trick the user into visiting a malicious website by presenting a seemingly benign worksheet.

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.com/pify?keyword=order+of+rotational+symmetry+worksheet+pdf In PDF document text
    • http://files.vivallbright.com/uploads/1/3/2/6/132696104/dodowija-zoludezumisexu.pdfIn PDF document text
    • http://files.columbinemiddleschool.org/uploads/1/3/2/3/132302716/pimolirisokojel.pdfIn PDF document text
    • http://files.wisconsinbaroque.org/uploads/1/3/2/7/132740949/povozaxagoleje.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/1/0431/5856/9128/files/logadoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2265/files/540ez_instructions_2014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/71353465707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/allianz_travel_claim_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/lusux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/62639080953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/lasugujiganakizogitifep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/mysql_running_sql_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1785/4366/files/27490858348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/bofapafaxisuwalesimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/vmware_workstation_14_key.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off000068a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 5568 bytes
SHA-256: d336b0a35d92e99d426fca224e7a2a403e4b236eabed8beb3905f56f53c91c8d
font_01_sfnt_off00007b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7B 10440 bytes
SHA-256: 78656dd71c71de7772fc7a376cf7212e4d3cfd2023757bb0a6f7fb714fa19ad1
font_02_sfnt_off00009f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F2A 16152 bytes
SHA-256: 70180b97a9b9fe0de1e0c05b06d733d04658c9f7a2923a3eee6842afe753d47e

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