Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9520b96008f56d0…

MALICIOUS

PDF

63.5 KB Created: 2021-02-08 10:21:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4c8dc187bc379cfcefd8309888c98b82 SHA-1: b4e9789d8e2c05dd38e3b91dc3b1768d2a4e5aa1 SHA-256: a9520b96008f56d06150a6915d2830c3ab2462c1ba7b745b31de33b9ae122b23
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://baarspo.ru/aws?utm_term=mcafee+endpoint+security+10.+6+migration+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486350/normal_5fe694efda537.pdfIn PDF document text
    • https://bepixumute.weebly.com/uploads/1/3/5/3/135302933/bejaki.pdfIn PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/e1a37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484097/normal_5fe95125a0236.pdfIn PDF document text
    • https://jidedenevunuva.weebly.com/uploads/1/3/4/4/134498736/5558956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5feb91f471065.pdfIn PDF document text
    • https://tidoxanarapora.weebly.com/uploads/1/3/2/7/132710787/nadada.pdfIn PDF document text
    • http://vilopeg.xyz/dumoxilavigivokol7vkh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379961/normal_5fd11766ea764.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/bisute/58326707958.pdfIn PDF document text
    • http://kivabidugitu.rf.gd/anonytun_vpn_apk_indir.pdfIn PDF document text
    • http://widuxetikos.epizy.com/employee_attendance_software_free.pdfIn PDF document text
    • http://pikuvideposem.epizy.com/sezero.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/gumivokuzusatenub.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/cabal_ph_gameguard.pdfIn PDF document text
    • http://susebuxusebug.epizy.com/2184249421.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/attestation_sur_l_honneur_990i_gmf.pdfIn PDF document text
    • http://rasunafosav.epizy.com/69462973189.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_off0000b992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB992 5932 bytes
SHA-256: 6bf8862cfa8de04f0b2b2d76e40b9301d73b5b8a9fcb4c9efc7bbfa9d5725e49
font_01_sfnt_off0000cdd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD2 9816 bytes
SHA-256: 8a7e40e28058f5fd51829c19a64e85cddaf8369b83d738e69a5fa6691e32e74f