Malicious PDF — malware analysis report

Static analysis result for SHA-256 074348b59c4fa38b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-10 12:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c71f12dfabc014f25d3cd27a2c661df SHA-1: 80f6076a98287296cadc1910471aec90ba0ed293 SHA-256: 074348b59c4fa38b7936afd81e16d11612bc49842fa7f13ed2a97543df3fd538
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Calendario escolar 2020'. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware distribution site.

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=calendario+escolar+2020+y+2020+minerd+pdf In PDF document text
    • http://files.tcmattsandsons.com/uploads/1/3/1/4/131483282/xuzudakogufofox_midedopilu_xibenubo.pdfIn PDF document text
    • http://xemivo.todos-juntos.net/uploads/1/3/1/4/131453045/50203.pdfIn PDF document text
    • http://files.atmoswater.com/uploads/1/3/1/4/131407632/vimifijosojavevoxuwi.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/1/0427/3097/9495/files/sovam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/66150731712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8178/4726/files/44644441146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/cities_skylines_garbage_piling_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/niwokedoveno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/56645971873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/kejulotevilinonopijesar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/coliformes_totales_en_el_agua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8111/2483/files/403_error_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/37145505726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3141/9287/files/77373293735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7945/1295/files/wenexusodagusiruzofotuza.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 4

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_off000068c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C5 5580 bytes
SHA-256: b57c93a114e2c5781469ad8aac247575ed82f837d5642aaf9c0af168a711c799
font_01_sfnt_off00007baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAA 10908 bytes
SHA-256: c324b0b360253ffea30fe0e51b5ca2ea9aca7ad3b778e314c88260ad3070db24

Open this report in the interactive analyzer, or submit your own file for analysis.