Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2bc187097eb310…

MALICIOUS

PDF

40.1 KB Created: 2020-08-12 06:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d5fe54489205143fb2f6ce698053d961 SHA-1: ce9a59812c7a296376d5cec6212e50d242287cb2 SHA-256: 1f2bc187097eb310a4aca440a6dd62bef3c09bcc0e7de261967bc1383cdd21a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious and contains a high number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=semiologia+pulso+arterial+pdf', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The presence of numerous Shopify-hosted PDF links indicates a potential SEO poisoning or link farm tactic.

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=semiologia+pulso+arterial+pdf In PDF document text
    • http://files.gospeltrumpet.net/uploads/1/3/0/7/130739318/a19b58.pdfIn PDF document text
    • http://files.edenbertrang.com/uploads/1/3/1/3/131380482/voxoxalivoxi_fedotira.pdfIn PDF document text
    • http://rololotum.crystalvielula.com/uploads/1/3/0/7/130775320/seperatas.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/1/0431/0463/2992/files/mowawajonavelebitazilebir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/mojivetagobubuwepeluv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/pifaraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/manual_d_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/jasewotenuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0253/4822/files/halo_encyclopedia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/wajote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/1393350377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/wuzerononowesazive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/89847367833.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 7

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_off00006073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6073 5464 bytes
SHA-256: e837fc6dbffdc3f2f68244f5abedd7ce3e90bba7fe6693fbeb4845bde0705bfa
font_01_sfnt_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 9656 bytes
SHA-256: 94844fde83a8e3e5b8f1c92e82b9dbef8189ec9606c0f73ecb91231451fd9580

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