Malicious PDF — malware analysis report

Static analysis result for SHA-256 7458b6c1b583c494…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 10:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19de681277513d527ec7f81ef2683582 SHA-1: a873c24465ca1762f8a6885aa4f84c841215331c SHA-256: 7458b6c1b583c4947cae782f193aa2e4c28019b5c91c9fa5fd9c33c9bf29ef9f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to direct users to malicious sites, likely for phishing or further malware delivery.

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=anglo+norman+studies+pdf In PDF document text
    • http://sosoti.donbosco.amsterdam/uploads/1/3/0/7/130739415/jozosixamizaz.pdfIn PDF document text
    • http://wewuk.polizzigenealogy.com/uploads/1/3/2/6/132682137/giwobu.pdfIn PDF document text
    • http://wowuduku.drheidiwellness.com/uploads/1/3/1/4/131483083/5e63bafb16.pdfIn PDF document text
    • http://files.threeblockmodel.com/uploads/1/3/2/6/132681392/9929703.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/1/0435/3160/0031/files/qemu-_img_resize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/89645932942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/1997_seadoo_gtx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/basic_linux_networking_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/36481256358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/zajifuzosopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/biopsychology_tenth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/bovuzuneworotekusijiminuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/california_fish_grill_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5799/files/84575749167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/livro_ortopedia_e_traumatologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/mesinowikufefuvasekixix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/nowetakibev.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 6

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_off00005fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDE 5348 bytes
SHA-256: 6580bd68859e582524e4945847477a53e24ef6e51f5d280667695d80fdeb17a9
font_01_sfnt_off000071f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F1 10240 bytes
SHA-256: fa78f7563db84b3e43ce26eb498e1d0a920d331ab7f5850d86b325cdc345cad2

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