Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e21595778e2bcf3…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 07:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65994f1c357b9a2aa6b5f8a0c3f3b666 SHA-1: fb7f8fbd62711841a1774752d57be02d78798199 SHA-256: 3e21595778e2bcf3d3f63411da25d20dc83b011963d1940f2510b7cf4e45fdd9
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'broiler chicken feeding schedule pdf'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=broiler+chicken+feeding+schedule+pdf, which likely serves as a gateway to further malicious content. The presence of many Shopify links, some confirmed benign, suggests an attempt to blend in with legitimate content while directing users to malicious sites.

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=broiler+chicken+feeding+schedule+pdf In PDF document text
    • http://puwup.dominicrohangates.com/uploads/1/3/2/3/132302815/kevapirulejofozomip.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/1/0431/1223/5174/files/53023118151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/vcftools_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3040/4506/files/caterpillar_iso_9001_certification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/17788784253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/521996383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/tumotawalizamatemijodugal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/21144854212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/vogegaxugugupanekij.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 1

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_off00006b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4C 5320 bytes
SHA-256: 89930105a3eb5195ea3fe2ba5a50d89ba73156b663a7c8087e9a29214a93308c
font_01_sfnt_off00007d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D62 10228 bytes
SHA-256: 97c1cb99cc2fc5499f9ce57c171e926f29d93f0b57e423d3011dd4bc6324bbde

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