Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4f8201c43849f6…

MALICIOUS

PDF

37.4 KB Created: 2020-10-03 22:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f834a06611645edcbc0aa86c90d615b3 SHA-1: d06097a19667e8a50edb45cea734892c5a4f1503 SHA-256: 7f4f8201c43849f6edfcfdbeeb42dcedb17690214c24260960a41bc2d30a0b91
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=quran+flash+tajweed+free+download In PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/kupixulaxuburoki.pdfIn PDF document text
    • https://site-1041608.mozfiles.com/files/1041608/lumizirad.pdfIn PDF document text
    • https://site-1036987.mozfiles.com/files/1036987/ruzirukitorovuzixodotetuj.pdfIn PDF document text
    • https://site-1039721.mozfiles.com/files/1039721/pubejomarasirunevitawun.pdfIn PDF document text
    • https://site-1038495.mozfiles.com/files/1038495/kebipirisuw.pdfIn PDF document text
    • http://files.mutiny-cannabis.com/uploads/1/3/0/8/130813301/3998859.pdfIn PDF document text
    • http://files.sarahneedhamartist.co.uk/uploads/1/3/1/4/131437436/jojemapeladopuroveba.pdfIn PDF document text
    • http://files.myoridefitness.com/uploads/1/3/2/6/132696111/nilegeb_junov_bufibax.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/1/0483/5619/6515/files/vigamadovizeterilemelaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/total_war_warhammer_guide_von_carstein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0517/3147/files/wepuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4023/4911/files/siziforo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5562/0006/files/this_is_the_police_2_trophy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e52188-266d-4cdf-9f9c-3f6081b4c0e9/wajufiwowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff9e5261-46ae-4ed3-84f0-e6562cdf6a34/gatasaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8967bf-74c4-4d01-a209-1328a77d4453/debuxabazopumosotapusexof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66c75971-6e9f-4bec-bfb6-1745d7f3ac25/sobaderuzepulugev.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_off00005569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5569 5224 bytes
SHA-256: 3eddee170bdd3e4f041af4aea38cbf00915d322f29a7e2a336914416f48c6bab
font_01_sfnt_off0000673f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673F 9724 bytes
SHA-256: 30b739c80b839ae70da2c331b3bb762e2971b94eb6d0aad6c16421912e48af29

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