Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b72f390766c197…

MALICIOUS

PDF

44.6 KB Created: 2020-10-12 18:03:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ee2b9ca5ae43f6675680ca44b9320106 SHA-1: 893697c471c0e2c87480f91fcbfa0061e8bd6604 SHA-256: 72b72f390766c1978c75dc63b7d8627e1afa3c4c32836eafc99c5badd5647996
194 Risk Score

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://gettraff.ru/strik?keyword=prevalence+of+hypertension+who+2020+pdf In PDF document text
    • http://fegupalo.knowledgeenriched.com/uploads/1/3/0/8/130874411/51bdbcc2ae.pdfIn PDF document text
    • http://magis.carolynmarconi.com/uploads/1/3/1/4/131406453/1818194.pdfIn PDF document text
    • http://vikisisof.slpublib.com/uploads/1/3/2/7/132740328/tuwuxojanexen_bufij_pekow.pdfIn PDF document text
    • http://vodalali.onefinedayct.net/uploads/1/3/2/7/132740214/makumimem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6212457e-dd57-4269-99cc-4cde785948fb/43659986119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a898aa-0b6f-43b4-bbd7-451e968fed6b/nazenizori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/105243c4-8a4f-451f-b439-3afef1eeea38/73024750959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/union_grove_middle_school_maryville_tn_supply_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4441/9757/files/dogar_brothers_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/98322235815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3185/6805/files/monkey_boxing_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6636/3546/files/naturalism_theatre_conventions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9774/2230/files/primus_t_shirt_amazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/tecumseh_ohh50_governor_linkage_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0081/0653/files/social_psychology_textbook_10th_edition.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 5772 bytes
SHA-256: dd502d87846131c25963f010cc775b1105bb08f16d2fd3a66d949c4d4618f078
font_01_sfnt_off000080a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 10616 bytes
SHA-256: a7896bf4575a2ecb5189eb698feacb14dedfcb5b29003fccffbf21fac9b238b6

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