Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcfd531e00bf059…

MALICIOUS

PDF

73.1 KB Created: 2021-03-04 01:32:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b585a9c71fba3362afbf5a13b304f95b SHA-1: d2a385a39aa93fa4c47b8f70d6a178576b85789b SHA-256: 2fcfd531e00bf0594b8e8fb8f270c7d0de9c74dc864bf081c23f68f51c750a93
194 Risk Score

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
  • 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.
  • 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://crophysi.ru/award?keyword=convertidor+metros+cuadrados+a+pulgadas+cuadradas In PDF document text
    • https://cdn.sqhk.co/zimuteraf/eqap0kA/fozafotabanu.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/QEf7gdU/sisuvureri.pdfIn PDF document text
    • http://igclienteam.com/tobadilapoyrhb7.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/e8QqCib/30866435216.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/sx7geNp/cars_for_sale_under_3000_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470839/normal_602eb9dd4f8f6.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/dungeons_and_dragons_movies_listq21w1.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/fedufiporara/what_does_the_whole_of_the_moon_song_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/chapter_2_animal_farm_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/how_to_put_newborn_in_baby_bjorn_carrier_one.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/commandos_2_full_version_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/gumodabarasapabigiruwoku.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/simatuk.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/xobipil.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/definition_of_heat_of_formation_in_chemistry.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_off0000d654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD654 5356 bytes
SHA-256: b6ff4d152cda2e450233fb1e6066c80d765d88219fde6de585f10ac0394db7b4
font_01_sfnt_off0000e87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87D 14556 bytes
SHA-256: 38ddf270d858c73e3ceb24f14b328c6f6fb3749d721b1eafdfa9a323f4fe9731