Malicious PDF — malware analysis report

Static analysis result for SHA-256 8940d5eeabe05af2…

MALICIOUS

PDF

43.5 KB Created: 2020-10-28 22:31:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 31e5a3a6741776603cb85b6179696093 SHA-1: debcabfe2f60c291e9de319da79307bf67bbac81 SHA-256: 8940d5eeabe05af2b0d3493b8ffcb7df86336abd0e4a828ad6715cb49d1552fc
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/aws?keyword=pure+fix+bike+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f8e790336939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f985bfc82e1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393631/normal_5f962e036d356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f99c2724af2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f86f86df1f00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/84c491e6-bf7e-4e74-9a0c-893added9da8/where_to_buy_white_pumpkins_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/13693959001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/080c7cd7-cbb8-4ac5-a027-2553ab6d8650/67034358452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d50a0c6f-8afc-4578-985b-1d0db635f140/90080919079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2221779e-42b5-4fb2-b881-dc8eb0259cfd/84409540179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b3cbd4-0cb3-44b0-b21d-93451b1c35b9/object_of_the_preposition_worksheets_for_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25df8e41-845f-4615-af3e-615894625b1a/xirizuxanumosepeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/baresoxopapalifulatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3417d60-247b-4d34-b29c-5a69d7622efc/nobaxuxetaxak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3496a85-29e9-4c01-945e-d5577391d0e4/hurdy_gurdy_man_lyrics_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f1d3ea0-76d2-409c-b043-e4ba8f07c7dc/puzzle_math_special_right_triangles_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/rotixogitabepemipujuwona.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/livestock_management_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ce6ac0b-8a24-4b1d-9f8b-361ef7d8b612/vevofapigabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13f81154-a91c-4269-bd12-d378fa7f62ac/renipakujariwu.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_off00006caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 4764 bytes
SHA-256: 7abc395ff95724ff6b35ddfdac5e8b1a741c59725853c1c2cbb4abaef90e0fc7
font_01_sfnt_off00007d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D14 10712 bytes
SHA-256: a8eb5461200054ad3596b0b215fdde5730f218cee406d4be4249985253fc2613

Open this report in the interactive analyzer, or submit your own file for analysis.