Malicious PDF — malware analysis report

Static analysis result for SHA-256 292b13af93ac96a5…

MALICIOUS

PDF

72.1 KB Created: 2021-02-27 07:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 9e9634132942bda76c1efbe6542fcd7c SHA-1: dc38338c3936807fc59745f6e18a75b8f3e05a3a SHA-256: 292b13af93ac96a50f605d06dc30f1ea00a333b58884763d8cc98b5c7da67d05
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/award?keyword=how+much+does+the+army+corps+of+engineers+pay PDF link annotation
    • http://tiktokhd.design/ubuntu_14._04_server_desktopt7wsc.pdfIn PDF document text
    • https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/dibirobapomisixobiki.pdfIn PDF document text
    • https://tulosiwawi.weebly.com/uploads/1/3/5/3/135326734/1447922.pdfIn PDF document text
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/gebunafozirud_lutexiwiwuz.pdfIn PDF document text
    • http://krokoboko6.xyz/78071566916rrk34.pdfIn PDF document text
    • http://bu-markett.com/cen_tech_62120_software_updatepn7g9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460968/normal_5ffb366dedc3f.pdfIn PDF document text
    • https://pagajunudew.weebly.com/uploads/1/3/5/9/135992687/vibudo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_602e2cf40bd61.pdfIn PDF document text
    • https://jeluxipofike.weebly.com/uploads/1/3/4/4/134490416/digakotusof_zivofasanu_nuset_rebanodazam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5fdbc0bfae5cf.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/dapekufoxiraku/oecd_action_13_final_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/dd_3.5_adventures_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/55310659146.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/zikesatalujojibufo.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/87506295941.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/ciliated_protozoa.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_off0000dbea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEA 5692 bytes
SHA-256: 38ad9358facb74fd49e2e9b90da3697a8536313f6c1a440b6e99250e74760ff2
font_01_sfnt_off0000ef33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF33 10628 bytes
SHA-256: 5badc2c87162383ab2868323a803838af3e63837018ecc57b0309259a6612775