Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b970cc73269b5c…

MALICIOUS

PDF

55.9 KB Created: 2020-09-30 05:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 768c9c49c68f458d1532fcc278e669cc SHA-1: 49eb641ebd74aa3a40e33a6f24ec678ef7a22e19 SHA-256: 72b970cc73269b5cb09ff75ce8e3f6a807153c306f95508838b55dc1acec3acd
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://ggtraff.ru/strik?keyword=biology+investigatory+project+on+pollination+for+class+12+pdf+download In PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/memodivigigujuvabow.pdfIn PDF document text
    • https://site-1036702.mozfiles.com/files/1036702/32072340101.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/37676699204.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/pewaxe.pdfIn PDF document text
    • https://site-1037268.mozfiles.com/files/1037268/nuvaburi.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/1/0477/2914/8060/files/raleigh_m400_mountain_bike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3855/0427/files/ban_list_yugioh_junio_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/5933/1491/files/national_auto_dealers_association_appraisal_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/75362986116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2960/8101/files/continue_down_the_hidden_path.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2261/3655/files/pokemon_black_cheats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/kubinupojol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/49403954143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/94370373421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/12991050797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0da1b0-48fc-4b02-8bed-7bd88ba15b17/99752216653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02fddb0b-0c79-4940-a1ee-e72d15dc1d25/lijixegutigikidefenu.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_off0000999a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999A 5884 bytes
SHA-256: d69b0f0b8c69da6d83880620745b2d36e19400f747ccfc8d463a5ef13315f7b6
font_01_sfnt_off0000ade6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADE6 10436 bytes
SHA-256: c6a08d2e00fddeee265d36de8e93c23589e5f5dedf0ed6b29b5db9e5037a9c16

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