Malicious PDF — malware analysis report

Static analysis result for SHA-256 711e200558df56a5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 00:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 748e9878bd5036027b292c96056b09dc SHA-1: cbd91d944542913a5d4c51b7171c87e4a5742ef6 SHA-256: 711e200558df56a54501dce00ee3ba51a37387f1aa0fb0dba9e3267e490a4618
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body and heuristics indicate a lure for a "free PDF download" which likely leads to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=anatomy+and+physiology+of+heart+pdf+download In PDF document text
    • http://files.fishnfrolics.com/uploads/1/3/1/4/131406036/8408409.pdfIn PDF document text
    • http://files.hansonfoodpantry.org/uploads/1/3/2/6/132681823/1b63725.pdfIn PDF document text
    • http://bepifowu.jillhunteclecticart.com/uploads/1/3/1/4/131437657/156e80.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/1/0434/9083/6632/files/xifub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/wivizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3373/8911/files/29633022224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/daxogafuxolagux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/33421632897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9715/3943/files/sukid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/67259163031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/caracteristicas_del_enlace_metalico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/computer_generated_voice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/animal_genetics_and_evolution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/63819757262.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 6

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_off00006685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 5640 bytes
SHA-256: 53207fc2ba4066dc26b3c846f2037161b5360ca05c9d6f79415bacfefd9e4519
font_01_sfnt_off000079a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A1 10560 bytes
SHA-256: bef6163688d8a426e7f9da1f7dfd9b8d74170923a4bfc78c2e82c103c7f66b2b

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