Malicious PDF — malware analysis report

Static analysis result for SHA-256 7127dc7cc495457d…

MALICIOUS

PDF

62.1 KB Created: 2020-10-29 00:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 67807b43f7d51220425ecd22b9ee2a47 SHA-1: d6f6a5772269b37a9538c49b06868af3f768279a SHA-256: 7127dc7cc495457df495cee7e3fc5bb3d765e2cc1914ca0c38789469b713a63a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 0.9998

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 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.
  • 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=jeep+wrangler+tent+rack In PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/nadekejezulal-sifudavadek-woxirug.pdfIn PDF document text
    • https://suludizivot.weebly.com/uploads/1/3/1/3/131383823/magarize.pdfIn PDF document text
    • https://jenafowumavadas.weebly.com/uploads/1/3/1/4/131437472/0a0252c1cb6bce.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://s3.amazonaws.com/zirojopemup/85967725058.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/42632323555.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/cardiology_mcqs_for_medical_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bda41d3-eb7e-49a3-8478-b58ad8db6784/timibulogowebitopaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/42118230180.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/human_blood_groups.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da0a77f0-42ec-4c53-aae0-5a43ed307732/statement_of_ambition_eagle_scout.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/charlie_and_the_chocolate_factory_story.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/meguwu.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/22119294070.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/biometrics_and_fingerprint_payment_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/songs_my_mother_taught_me_marlon_brando_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e63af39e-1161-46c9-8d2b-452fda340e67/42033494823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7626f1-1848-4dbb-88bd-e165ff888925/15302247310.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/active_vs_passive_voice_exercises.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6184178d-08ff-498b-948d-541cdf2e6158/linozalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3be40aa-5380-439b-9abd-4298e6ac827e/0_dark_30_full_movie_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18bfd7b4-3a7e-47b8-b6be-40f219aa7b4c/gekodezadiputepimemux.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/34899071612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57405f79-1d44-4faf-a152-c7ad9cfda705/5829062711.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/34109754078.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/canterville_ghost_summary_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/root_apical_meristem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8C5 4700 bytes
SHA-256: 3736651dec5832095598a903ee917ff45a4efb55c26718658549b14142b3cf1e
font_01_sfnt_off0000b8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8D5 10268 bytes
SHA-256: 4886529958e3613baa1852d535ad4ca956426817743ed0e3adcd9d3eac2cef94
font_02_sfnt_off0000dc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC11 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333