Malicious PDF — malware analysis report

Static analysis result for SHA-256 497f56cf96b5836b…

MALICIOUS

PDF

39.0 KB Created: 2020-08-17 14:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35e2f6e61edb5a6a6215032cba3eeced SHA-1: 362403075d53cdc18dff2c882f07380ce3fb7ee5 SHA-256: 497f56cf96b5836b1ecd026c40ffb84c1bac5038293ad57d399b2b6728807e31
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and malicious redirectors. The document body, though partially corrupted, contains a URL that is also flagged as a malicious redirector. This suggests a social engineering attack aimed at directing users to malicious content.

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=bstc+ka+full+form+kya+hai In PDF document text
    • http://ledunivit.beckyyates.com/uploads/1/3/2/7/132740185/tijivemutufu-suxelisewefalu.pdfIn PDF document text
    • http://zuvefe.leonorigroup.com/uploads/1/3/1/6/131606060/bb0755f4.pdfIn PDF document text
    • http://files.jasontoonwrites.com/uploads/1/3/1/8/131856815/wetofapivokuv-kebabeg.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/1/0430/5249/9095/files/pavuduku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/jamb_registration_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/50786814725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3384/6183/files/guinea_pig_care_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0451/0887/files/raref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/60770411648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2207/3508/files/17526115281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/75056573417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/hernia_umbilical_neonatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/geluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/povabomejazevar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2305/6545/files/bearing_size_catalogue.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A4 5336 bytes
SHA-256: 64665a3d45d827b8b52d5965d1515200de7d030ea1eb436855aa07f16706d8b1
font_01_sfnt_off000062a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A0 2092 bytes
SHA-256: 9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2
font_02_sfnt_off00006c41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C41 10160 bytes
SHA-256: f4fb96ac7940a064bd593b01833bc812cffe1eaf2fb7a7c7e20640873b34b750

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