Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c47d6ebb456aab9…

MALICIOUS

PDF

41.1 KB Created: 2020-08-23 06:18:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52c31f689439e60843eebe39e4ca94a0 SHA-1: 415056a5c859d81fedd441c0a7ce762ad91b8dfc SHA-256: 1c47d6ebb456aab9dc87a6f196cfc26eb380d1bc54dd2c8ad42685d637285255
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'types of peritoneal dialysis pdf' and the URL itself, suggesting a lure to a malicious site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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=types+of+peritoneal+dialysis+pdf In PDF document text
    • http://files.shantellsnaturalhair.com/uploads/1/3/1/4/131453494/3035315.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/1/0437/4839/3112/files/28242601934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/dictionary_of_advaita_vedanta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/retonevulukipirivil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/amhran_na_bhfiann_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9324/4570/files/bibolubito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/atelier_bow_wow_behaviorology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/77416984206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3367/9256/files/zotiliborekadesifewenezef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4784/5030/files/budget_2020_upsc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/sixuseweraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/dobokavab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/cours_algorithme_pour_dbutant.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5669/2390/files/pirates_of_the_caribbean_piano_sheet.pdfIn PDF document text
    • https://medlineplus.gov/dialysis.htmlIn 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 2

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_off0000621e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621E 5088 bytes
SHA-256: da0fec43d067cde9249c4176a5f6abd8894a22fabd20ab542a9f6eb7f033a565
font_01_sfnt_off0000737b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 10816 bytes
SHA-256: af030b3ea7c5d7a0233c802aa291f9761f3dc5757e8b397094f246657bc8e203

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