Malicious PDF — malware analysis report

Static analysis result for SHA-256 729e77c5fdfbfd05…

MALICIOUS

PDF

61.9 KB Created: 2020-08-16 02:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e938584fb13a6752b0d38902f17d18fd SHA-1: 17752fa85e6681ada47fbb0cf343488e9072bad7 SHA-256: 729e77c5fdfbfd052efe09ebdb27ff6c75505599e54c1dfb0fc5d91d38d0eabf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one to a known malicious redirector, disguised as a worksheet. The ML classifier strongly indicates maliciousness. The embedded links suggest an attempt to redirect users to malicious sites, likely for phishing or to download further payloads.

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/wb?keyword=citizenship%20in%20the%20world%20merit%20badge%20worksheet%202017 In PDF document text
    • http://files.ridgemontresources.com/uploads/1/3/0/8/130813132/wumut_dovuxunowogari_lajatekur.pdfIn PDF document text
    • http://files.anglemidwest.com/uploads/1/3/1/3/131381109/6695135.pdfIn PDF document text
    • http://kajukurop.wendijjensen.com/uploads/1/3/0/7/130739046/niputedijegawi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/zuputojijugoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0412/3557/files/chemistry_notes_for_class_9_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/ralijujikolekujosogudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/79896707105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/deguwazulim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/dizozalawademegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/gedidolifogowusomawab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/96927565894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/girorowe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1ED 5936 bytes
SHA-256: 22720be28c7171d837f88886eebd708548c42ec4cce137785f2595934d4108d0
font_01_sfnt_off0000b612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB612 11352 bytes
SHA-256: eaa8f72101b6addd51249fb16f47b7e403b9b8c52320a765e477fca528abbca1
font_02_sfnt_off0000dcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAB 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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