Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7be6377e535c14…

MALICIOUS

PDF

37.3 KB Created: 2020-08-18 13:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f773d5703f6da10fa24895ce3c12e755 SHA-1: 09d5b4f08d547ee3eeecefafb1b20c33eb5d4142 SHA-256: 5a7be6377e535c143ccda45c9fe8a5254a6b3af66e83daa8c24ce8085d655e3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing campaign. The primary redirector URL is identified as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to lure users into clicking it for a deceptive purpose. 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=freezer+paper+sheets+uk In PDF document text
    • http://pomujabiz.chicagoyouthshakespeare.org/uploads/1/3/2/6/132683001/laxizevuwiweguj.pdfIn PDF document text
    • http://vekibofon.unad.agency/uploads/1/3/0/7/130775850/sufovebiw.pdfIn PDF document text
    • http://files.in2improv.org/uploads/1/3/0/9/130969910/kojuwodela.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/1/0434/1386/4604/files/4546823151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53981477141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/ruruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/32064472559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5298/0641/files/xamika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/81086136090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/wuwolukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5274/4347/files/46317931049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/menadifotidobujubelutawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/mla_cite_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/cbse_class_10_syllabus_2020_19.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_off000054bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54BC 4944 bytes
SHA-256: b45cc038c56cc2c30e5639eb4aa6d7e945387e9d5914dd602a5a078adb6c76a3
font_01_sfnt_off0000658b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658B 10700 bytes
SHA-256: bf911735b79ad5f3e56bf257d6716f157a91b58ebf72361557ba388e164aecc2

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