Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2567e5283b3d3e0…

MALICIOUS

PDF

72.0 KB Created: 2021-03-01 13:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ce5fa38682ce0fc79135e5d1c381d4dc SHA-1: b6b2e681ce30aa256ea4f28cb1695b5fc120bf05 SHA-256: a2567e5283b3d3e05cb7f15fe0c232d892ea1543241effdfe7daf0c19c79f777
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=par+quoi+remplacer+le+beurre+tartine PDF link annotation
    • http://jadogaxarabu.mygamesonline.org/68931312248.pdfIn PDF document text
    • http://jebewif.22web.org/kikemuxenovinozog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_60209ae46dcaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_603bb9d2e26e5.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/gekojulog/pulisurizubowizofa.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/dailymotion_video_er_software.pdfIn PDF document text
    • http://bamonoxo.onlinewebshop.net/origami_lut_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/gadek.pdfIn PDF document text
    • http://mowigefugitixa.epizy.com/caries_en_nios_en_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/6900476783.pdfIn PDF document text
    • http://mogopubu.epizy.com/fonufi.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/371316460.pdfIn PDF document text
    • http://gakupoxefale.epizy.com/avengers_infinity_war_part_2_comic.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_off0000db42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB42 5168 bytes
SHA-256: 80d5064703f2330eaa619b2e7752634d010a0981ec07b1a79441113daf69b543
font_01_sfnt_off0000ecbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBC 11780 bytes
SHA-256: 80cec6db0b510a059b89fd4a3736ce27a31cce74b3db0cf414f5e8360211411c