Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d2ce3a4a6eb6431…

MALICIOUS

PDF

67.4 KB Created: 2020-11-24 23:59:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 59d6777425c2f7a6f9896e6995babc80 SHA-1: d813594baf62e66bd548c073f1400bb59abc6018 SHA-256: 6d2ce3a4a6eb64314032921e6e75ee4ae1cf23be7ad814e467de3c4fa1dc204c
156 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 ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/aws?utm_term=livre+guide+du+routard+australie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384821/normal_5f8db0b970fc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499021/normal_5fb364da57a06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5f9f5b6adf5ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8eedfa7ce77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_5fb2d5b241ce8.pdfIn PDF document text
    • https://tudekazesabi.weebly.com/uploads/1/3/4/3/134367585/kisetiwu-reseta-winapitila-zivogomuvo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/latufenaw/free_fire_apk_download_pc_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/how_to_tie_toga_female.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/boca_juniors_uniforme_dream_league_soccer_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/87891725803.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/basic_science_and_engineering_drawing_book_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a444ea5-e5c5-4c00-b455-815864b9de64/diversity_amid_globalization_6th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/587c2052-b012-43b5-a315-652d8cd75a3a/alfonsina_y_el_mar_vivian_tabbush.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_off0000c913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC913 4992 bytes
SHA-256: 467498cb72a9137220864cf386d9b11c8dd98e3e6f97bc302f457c1a46873892
font_01_sfnt_off0000da27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA27 11700 bytes
SHA-256: e0f72dae675ee0b62c875c1a41609e25e60fe5df0bf61a5d2a3c7754ba018cbb

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