Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b563a3af7a8fdf6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-08 06:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d624aa8e09fff526bb8d760b2a67adb SHA-1: 5394e0f57ce6b407865588bf5387be47481857ba SHA-256: 5b563a3af7a8fdf6597771aaaf196a9300cb3926800acb7c2e502de1d89ce834
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'lesson plan sample'. The presence of multiple PDF links, many pointing to Shopify, indicates an attempt to create a link farm for SEO manipulation, likely to distribute malicious content or phish for information. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=7es%20lesson%20plan%20sample%20pdf In PDF document text
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdfIn PDF document text
    • http://files.skanlabnorge.com/uploads/1/3/1/3/131398139/vonepovufefibo.pdfIn PDF document text
    • http://files.arcofcentralplains.org/uploads/1/3/1/4/131406181/telagefugur.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/1/0429/1395/6006/files/starwind_v2v_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2949/0838/files/formulaire_attestation_pole_emploi_vierge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/wowajizuxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/genesis_bible_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22700630349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/treatment_for_oral_lichen_planus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5671/7207/files/9797697216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/gozitekikiwowifej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/excuse_me_kevin_gates_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/tutumaragujajara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/vudaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/kefibizagonosoborejato.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_off00006c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C34 5076 bytes
SHA-256: 4eecf865ba25aa683fa04462c5773cf47964431f25a6818b92d190f1f375fc5a
font_01_sfnt_off00007d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6F 10700 bytes
SHA-256: 98c333a54941bfeed57ab9b7dcf84b49e2f36b44979c19c90c47b996b837016f

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