Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1c23988082b1d6…

MALICIOUS

PDF

50.8 KB Created: 2020-09-30 15:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-31
MD5: e7de8a4fd2137c55b4c749af61c856aa SHA-1: d4d8cb79f07bd4cf5e9f28f035fe4afb6c09479e SHA-256: 5a1c23988082b1d63d348dfba8fc4d0415c441d1b8f330d0fa91cd36415c39d1
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=ganesh+chaturthi+aarti+lyrics+pdf In PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/kigebuzaxajilenut.pdfIn PDF document text
    • https://site-1037846.mozfiles.com/files/1037846/70669687105.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/62334195542.pdfIn PDF document text
    • https://site-1037891.mozfiles.com/files/1037891/duxaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/govufuvojurakuvivutoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5052/7639/files/fender_fa-100_used.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4928/6817/files/red_baboon_tarantula_care_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f1a0341-dd55-41ca-bc56-8538b45eed5c/losigamowalupibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c401e4d7-0429-4bf4-b628-114c21f11665/62119504463.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67a21a84-4bc0-459f-815e-f9e7f593a582/92941813448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d25e88c7-fb5a-456e-a429-0eb8e9aac3bb/82348794551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ccddc68-30a0-4cf8-9be5-50c44de1feb2/lules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/porosity_and_permeability_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/mizazowazavebikukunazup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7079/0559/files/percent_composition_worksheet_with_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7045/5957/files/charles_dickens_david_copperfield_free.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5148 bytes
SHA-256: 7171ac2b21d2826698c9e2ac0bd7f8727c00235b62e803b5e3d5a525db928630
font_01_sfnt_off000074a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A0 3772 bytes
SHA-256: b850e935aaf604f3e1824861b6c46746957ce6d0e1401f4bf16d070b42224529
font_02_sfnt_off00008044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8044 14844 bytes
SHA-256: f64ceda78618a4ec3269377e6fecf0e09a354451c19fd0e2af25b0451a1b3e10
font_03_sfnt_off0000ae13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE13 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3