Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dcd4a99c84f557a…

MALICIOUS

PDF

40.2 KB Created: 2020-08-12 13:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ed88b2022c9184f3533b5f74081fa7e SHA-1: 54213071301aec5244bef9e8b857bababdcda99a SHA-256: 5dcd4a99c84f557ac3bef025fa9c700b1cc7ad3105ee4e52a2ab6815a5c74295
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to an SEO redirector, disguised as a search result for 'autoimmune gastritis treatment pdf', which is a common lure for phishing or malware distribution. The presence of a visual download button further supports this malicious intent. While no scripts were extracted, the PDF structure and embedded links strongly indicate a malicious redirector chain designed to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=autoimmune+gastritis+treatment+pdf In PDF document text
    • http://files.blossomvalleysingers.org/uploads/1/3/1/8/131871593/2531817.pdfIn PDF document text
    • http://files.dunlapsrestaurant.com/uploads/1/3/1/3/131379832/bineno_fodos.pdfIn PDF document text
    • http://files.foursideddesign.com/uploads/1/3/1/3/131379706/furelijeti.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/1/0432/7571/4715/files/malisis_doors_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4897/1938/files/fusionner_des_fichier_en_ligne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2949/0838/files/questes_de_associao_de_capacitores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2985/4368/files/potibim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/apexogenesis_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/50738804738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/transpose_data_frame_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8985/2571/files/income_tax_calculation_statement_for_the_financial_year_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0537/7701/files/susijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/pasevatuworumarug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/xifekobobugab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/animal_sounds_names.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_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 5320 bytes
SHA-256: 4e79e710c64679273561c87a895544976bf18102821ec6057fd270b2aa1074cf
font_01_sfnt_off00007306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 9600 bytes
SHA-256: 3290e98918fe53d49a7e56a975f5595dc697a6256182e5a42fc3e962da4f44be

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