Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4916365c1403612…

MALICIOUS

PDF

115.7 KB Created: 2020-08-07 18:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45990f0203414ac6d0f16bb809cc476a SHA-1: 5c2a6cd8f4e35d2599c9772ae733dd243355cb69 SHA-256: f4916365c1403612185a65191320eabe0d65f0c1a3d6ac13b01d8bf4087f2fff
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm, with a primary URL pointing to a known malicious redirector. This suggests the document's purpose is to lure users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the redirection to 'ttraff.com', indicating a high likelihood of malicious intent.

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=affinit%25C3%25A9s+%25C3%25A9lectives+goethe+pdf In PDF document text
    • http://files.archtopukuleles.com/uploads/1/3/1/6/131606348/3434808.pdfIn PDF document text
    • http://sefej.stayathomerustics.com/uploads/1/3/1/6/131636664/mojikazabavadej-vimusaviji-dowowam.pdfIn PDF document text
    • http://files.prokopenko.net/uploads/1/3/1/3/131383429/4041614.pdfIn PDF document text
    • http://files.getretti.com/uploads/1/3/2/6/132683330/9a8771dd.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/1/0440/9671/6952/files/junemonetipimurawoxuwejeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/traduire_anglais_francais_un_document.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/43975236946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/jarate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/zakalopimizokalajus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9287/7217/files/45879978624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/css_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4376/3862/files/padubijijukexej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/razitirapuwop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/dugevukunajazodexekozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/13637212467.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C9B 5304 bytes
SHA-256: b52ce5dbb49761e27a1ebb202d990fcdef2c6447fea507c3d900c52782b14205
font_01_sfnt_off00018e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E6C 1796 bytes
SHA-256: b42f2b1d9b9768bfc02a12059f5367065cf6b2ec507aeb1e331bceec42ba939d
font_02_sfnt_off0001975d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1975D 12908 bytes
SHA-256: 205cb49f01e9b492db92c836d356468aaed5d3b3be84252b38c42d3804c1a770