Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea6cc1e1a47d0fe…

MALICIOUS

PDF

40.7 KB Created: 2020-10-28 20:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: f5810fa6e4f2522647aedc3b48099355 SHA-1: b99fb87d1c50a49dffdf7a17050d41a33c9e806a SHA-256: aea6cc1e1a47d0fec558fc6da00f28b1b0faeea7a98f637b365358c1865ae423
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://ttraff.me/123?keyword=coral+academy+of+science+nellis In PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/6239860.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/siwekofiwiviz.pdfIn PDF document text
    • https://wepeweguwerixum.weebly.com/uploads/1/3/1/8/131856135/xanovit_vaxixerup.pdfIn PDF document text
    • https://fenivubad.weebly.com/uploads/1/3/4/4/134482284/wifar.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005e07.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005e07.bin)
    • https://s3.amazonaws.com/xojafemori/34705624959.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/taxulagepul.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/encyclopedia_general_science_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/40359434958.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/75409083670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60240d8a-0946-4feb-9a46-bf1e850ee4de/75417594792.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/bureaucracy_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ef57a32-4958-483a-91ef-9c2024a36001/63991794236.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/emphatic_structures_cleft_sentences.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/21761522396.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/affairs_cloud_daily_current_affairs.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/30207173015.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/wexitaxumawoxuxonezos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8611e5-ec60-49ff-bd44-73039ccee0ef/71202285114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ce0b54c-f1e3-4fb7-95bc-0141b9830a1c/download_boys_over_flowers.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/8141172255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c324f30c-a31b-428a-bc76-129188d1e9ce/odyssey_of_the_mind_pin.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/bulk_carrier_practice_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/18488333882.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 extracted file (font_00_sfnt_off00005e07.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E07 5176 bytes
SHA-256: e06ab21e75dbe05a4f5ef6f869d38334ca08021397d93758131738633741f118
font_01_sfnt_off00006f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F92 11360 bytes
SHA-256: 10875b99543ace9939ca084b60e7a00ac83b7820799f5c27e10888eca1ad1e66