Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5ed2d0f15606fb…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 00:20:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27c9efa882f692c53232c834f0b9050c SHA-1: 3801af7c3b15697a037dcd9fff94e4331be32175 SHA-256: ed5ed2d0f15606fbb6ba538495d4660d188f6b4af6c84bb6faec0146f3bfec06
194 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'adverb worksheets for 5th grade' and the malicious URL, suggesting a lure for educational content that redirects to malicious infrastructure. The ML classifier strongly indicated maliciousness.

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=adverb+worksheets+for+5th+grade In PDF document text
    • http://tujev.enikkidrobertson.com/uploads/1/3/0/8/130813528/d08a876e0.pdfIn PDF document text
    • http://files.boydssports.ca/uploads/1/3/0/7/130738504/naruse_pomones.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/1/0428/8095/8617/files/cavernomatosis_portal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5887/8881/files/program_for_converting_to_word_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/national_account_manager_resume_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/16516184296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9997/8904/files/anfitrion_plauto_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0455/1590/files/61013316141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/jevada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/30831100194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/nepuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/99388684705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/50567883553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1646/8133/files/preschool_admission_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0515/5240/files/zezagojokumad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/gewenuwub.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 5

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_off00005bfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFA 5608 bytes
SHA-256: 74df1c35d1e55093bcd0cf91e7c4ca4ceaa89e608df5095355ca69862c2a27ff
font_01_sfnt_off00006f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F23 10072 bytes
SHA-256: bfde6ac420e8c686731822974afb317b94985c0ab429dc27e9263f504c79f209

Open this report in the interactive analyzer, or submit your own file for analysis.