Malicious PDF — malware analysis report

Static analysis result for SHA-256 434055d9cbbea6ec…

MALICIOUS

PDF

77.7 KB Created: 2021-03-01 10:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 099e63d398c23e72a9f64abf43441c55 SHA-1: 90361dcd1f384f48e4e6cd5eb3a7572a71d6b24f SHA-256: 434055d9cbbea6ecff2bb608130e62f694d862c9332c3ba8f52d98cbd75c1b39
136 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
  • 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.
  • 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://pelibifir.ru/award?keyword=airtel+dish+tv+toll+free+number+customer+care PDF link annotation
    • http://musc-media.xyz/brown_s_nautical_almanac_2017vcz7c.pdfIn PDF document text
    • http://nowatora.22web.org/55768589157.pdfIn PDF document text
    • http://raftgjgr.space/dazibisorugedenofrur6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_601cff939006e.pdfIn PDF document text
    • http://thechambre.xyz/sudukifefe7qfow.pdfIn PDF document text
    • http://nixekagog.22web.org/equal_rites_audiobook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452839/normal_5ffdeddc4a879.pdfIn PDF document text
    • http://mailedflkf.site/lunosawujezekogaeqyit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410199/normal_5ff79d24b8dea.pdfIn PDF document text
    • http://razvivatel.blog/7872373593lsvu2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419828/normal_5ff9a71c568f4.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/bipovoromoj/pefupotodisuliwerupuvebi.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxalirudidel/informazioni_traffico_autostrada_del_brennero.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/suvadaroliwo.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/reaktionsweg_bremsweg_anhalteweg_formel.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_off0000f31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31E 5448 bytes
SHA-256: 7acbf362d88e2f622d0d5b2b65635c27ced56e741ce73a8f4c041ee0e3c197b0
font_01_sfnt_off0001057c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057C 10724 bytes
SHA-256: 8ab24bf152dad649c86c501c5af386a086b7ac334f34a5147f5ac00f75f30ef2