Malicious PDF — malware analysis report

Static analysis result for SHA-256 11afd101a293e603…

MALICIOUS

PDF

42.1 KB Created: 2020-08-17 18:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cb87853bd17e30930abadaf0f45d99f SHA-1: 91d6e47fd55a2f06e964c06e2f265d6345c37a4c SHA-256: 11afd101a293e603738ca08588cd573c2ca1acc531001f38efe2bf78cd0ff80c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector infrastructure identified as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting malicious sites under the guise of providing a PDF download, likely for phishing or malware distribution.

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.ru/pify?keyword=associa%25C3%25A7%25C3%25A3o+mista+de+resistores+pdf In PDF document text
    • http://xetise.sarexplorer.com/uploads/1/3/2/3/132303382/nubotewot_runomu_bizoxu_jonule.pdfIn PDF document text
    • http://files.ainokonkka.com/uploads/1/3/1/6/131637148/zawoforuv_xarelapowidu_monagidevev_tadililowomi.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/1/0433/4498/6280/files/canzoniere_chitarra_download_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1138/1147/files/the_offspring_hit_that.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/il_bovarismo_jules_de_gaultier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/27225289458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/sujufoditukizakadifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/pemogidusovegugeneku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/nusitokiwuvojot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0980/8280/files/calisthenic_workout.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 3

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_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 5760 bytes
SHA-256: e77d937d0f98a1fb74c634cfd46dd6a85412a0daa280d18b10bbfee152489492
font_01_sfnt_off0000758d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758D 12244 bytes
SHA-256: 56dcc7228855f42a9c8d36fecf4c411d4d56c12fd8278f3cf7f85a50782294f5

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