Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e543625b4a0a5db…

MALICIOUS

PDF

40.4 KB Created: 2020-08-10 15:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b3aed89e7d59fad6896d3e3d508f784 SHA-1: 343364ca141cec84f2172585ecc7eb2fe08e106b SHA-256: 0e543625b4a0a5dbcc4ae7b6c46c73a30ba28c84474565d94187ac6e5c6c74b1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector URL, identified as malicious, which is presented as a download for educational content. This tactic is commonly used in phishing campaigns to trick users into visiting malicious sites. 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/pify?keyword=bse+odisha+8th+class+odia+grammar+book+download+pdf In PDF document text
    • http://files.theloopdeloop.com/uploads/1/3/1/3/131380651/kipuvuviluxoru_gajuse_tituxikop.pdfIn PDF document text
    • http://files.volcanolakeadventure.com/uploads/1/3/1/6/131636792/4001623.pdfIn PDF document text
    • http://wedufiten.burtongreenparishcouncil.org/uploads/1/3/1/0/131070109/331c5e298d7d0.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/1/0433/1926/3397/files/swot_analysis_of_unilever_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/equations_of_straight_lines_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/nagunosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2362/9477/files/14479182203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5107/7032/files/harvest_moon_gba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/48272805187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/jodapaneraxuturusinedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1243/7662/files/34238140927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/74443722044.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_off000048db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48DB 6108 bytes
SHA-256: 5b58c88db2219b4973ebfdde5af2810891b479216fa8849d767cb321dde93061
font_01_sfnt_off00005d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8E 9804 bytes
SHA-256: e9ecc3ff3dd8c22f074d751722d842753d3649a82ee81285a65206a74a328ebe
font_02_sfnt_off00007f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F70 16068 bytes
SHA-256: 5338b60dac2ddcc9fbf81734882903060897ff8c18563aad6864a581beec55c6

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