Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccb225362010d814…

MALICIOUS

PDF

74.8 KB Created: 2021-01-23 02:00:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d69fa296b62948f3228206afae084dec SHA-1: 3f9d37dac2db5b0033dacbec445d861d6ec440df SHA-256: ccb225362010d814bd0d7a870bb6c01d4fed49eb439831c952168debaf014915
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. Several of these links point to domains associated with malicious activity or unknown reputation, suggesting an attempt to direct users to harmful websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/123?utm_term=of+the+following+questions+except PDF link annotation
    • https://nelizebowi.weebly.com/uploads/1/3/4/7/134734992/799983.pdfIn PDF document text
    • https://wixozini.weebly.com/uploads/1/3/4/3/134383912/rejunowujoza.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/hfgjHii/ninja_star_wars_game.pdfIn PDF document text
    • https://site-1172308.mozfiles.com/files/1172308/blackpink_all_songs_list_in_order.pdfIn PDF document text
    • https://bunemevomuw.weebly.com/uploads/1/3/4/7/134733911/jadefudufujiwar.pdfIn PDF document text
    • https://site-1247196.mozfiles.com/files/1247196/eve_online_athanor_guide.pdfIn PDF document text
    • https://fegedagupadid.weebly.com/uploads/1/3/1/8/131856554/riwamefomopefaja.pdfIn PDF document text
    • https://retizobokeli.weebly.com/uploads/1/3/1/0/131070240/gegumogu.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/8ifUchf/kokuxomuforedafuli.pdfIn PDF document text
    • https://xavaruren.weebly.com/uploads/1/3/1/3/131383751/nupegu_xumel_poseloguzi_fifakuterotede.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/jawusawar/powerpoint_templates_free_electrical_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/american_pie_3_full_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/answers_in_genesis_appendix.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/consumer_reports_cars_issue_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/bluestacks_3_windows_8._1.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD91 5284 bytes
SHA-256: 40d7c694512318e0ff2088b4a0e354d4597546f3aeef774a355063693cacdee6
font_01_sfnt_off0000efa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA9 2032 bytes
SHA-256: a353d780432e2b00cfb66a80c35b9dcc3a4a91f3f7b41884fed931c80fd5ae89
font_02_sfnt_off0000f938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF938 10736 bytes
SHA-256: af290ae1280048672566d5339fc021e89268c21bc8dd09a1e3ad0e91b5845bbd

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