Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c7f7643f84609e8…

MALICIOUS

PDF

72.9 KB Created: 2021-02-28 15:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d5452656d63a5353cb052723cbedc24e SHA-1: 835f45575d04b7e2e874916aa13bcdc4f7361530 SHA-256: 8c7f7643f84609e83a9a2bbf4e91365802a7d368621f8e90e232bdbfaa8812eb
136 Risk Score

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
  • 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://jacksth.ru/wix?keyword=sony+rmt-b119a+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5fe29333f268e.pdfIn PDF document text
    • http://tb-films.ru/450446912955b0gj.pdfIn PDF document text
    • https://kusafowagu.weebly.com/uploads/1/3/1/8/131871480/toxosadugiwef-komaka-kaxowilite-doxakitawofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414680/normal_60284136672af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450418/normal_6006ad0e83e9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481271/normal_60100110430e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_602ad7c43d400.pdfIn PDF document text
    • https://vuzufakafedovi.weebly.com/uploads/1/3/5/3/135347170/1337125.pdfIn PDF document text
    • https://kemigaguni.weebly.com/uploads/1/3/1/0/131070112/bd61fa812df.pdfIn PDF document text
    • http://bio-ita.fun/manodosuzugl6q2.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/nonipesikiri/industrial_gearbox_types.pdfIn PDF document text
    • http://wuwatomugexove.epizy.com/87739447729.pdfIn PDF document text
    • http://gebaruzowulidus.epizy.com/netflix_pc_apple.pdfIn PDF document text
    • http://moretavumafoge.epizy.com/88641178656.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/eccentric_person_informal_crossword.pdfIn PDF document text
    • http://rigirulame.epizy.com/barnett_quad_400_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/amazon_kindle_software_update.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/sansa_clip_rockbox_reset.pdfIn PDF document text
    • http://josisuvo.epizy.com/pesezuxezuj.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_off0000d901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD901 5236 bytes
SHA-256: 2c90567e8944a4ebdad3eb05a5d15dbe6c79c786f1d09ac4df2c718b2fe0096d
font_01_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 13320 bytes
SHA-256: 78f8128a7b6ec2222d5ef98b3224e50a025ed4c5d7aef6183ce37587c5e389a2