Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5e6619f0e7e5fa…

MALICIOUS

PDF

43.2 KB Created: 2020-10-05 04:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d55dff204cfe94ffd4d85451d9fe0fcb SHA-1: 92d152bcc2fb515e1f59ee03658072bd46f95751 SHA-256: ef5e6619f0e7e5faac1d9445aff15ea15e421b4ee9096d785f6b01532d8dddd4
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://cctraff.ru/strik?keyword=kenmore+10+sewing+machine+manual In PDF document text
    • http://files.teachervogel.com/uploads/1/3/0/7/130738975/0f3a3384ab9660d.pdfIn PDF document text
    • http://files.iowaconcreteleveling.com/uploads/1/3/2/3/132303329/13226cb.pdfIn PDF document text
    • http://files.juniorjets.org/uploads/1/3/1/1/131164153/9350921.pdfIn PDF document text
    • http://files.panatlanticexchanges.org/uploads/1/3/1/3/131383982/9155796.pdfIn PDF document text
    • http://manutol.threecoursechallengeshs.com/uploads/1/3/1/4/131483249/6991935.pdfIn PDF document text
    • http://files.wellnesssanctuary.net/uploads/1/3/2/6/132696580/7194221.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/1/0481/8373/8525/files/39230786350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5468/5599/files/nimoxekiladazozivuvipare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0399/2474/files/warrior_guide_black_desert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9856/4517/files/sevewabijenoreduvuvakabuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4029/3543/files/days_of_our_lives_theme_song_1980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9125220-49e9-44c9-ae7c-6a3d224f60fb/88691132411.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f8eeb67-f7bd-46ef-910b-60de63761bbb/77212327075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf145b4-47ed-46bf-9cf4-ca16f6f3e214/pifojixip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581b40b7-fab9-4d73-852b-8f338991b5b0/todeletozidaleguwuketujuf.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 5

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_off000069f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F2 5468 bytes
SHA-256: 2eedb7ff3ce26e90924ca5c74ca65d83de4ccc892cd28f02b3345b0965797777
font_01_sfnt_off00007c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7F 10484 bytes
SHA-256: 3edf2c88d4b51fc68e5c55605ba5d67f6e87aa3e7e33572df940a3018e323193

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