Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ebd9989630910e…

MALICIOUS

PDF

70.4 KB Created: 2021-02-24 14:57:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 11ef93a6bff770034f32da5a8c6151c8 SHA-1: 68ea9fab90bf8759f315402294120ab5a80a4dce SHA-256: 16ebd9989630910ea5bf296401cd92a69fa936065d049c01607cf3e6d35bd28c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=mmx4+boss+order+zero PDF link annotation
    • https://cdn.sqhk.co/mepapogivoma/ehfdhfG/redneck_rush_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/hphbvor/starlink_battle_for_atlas_co_op_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/fixiwuwukufi/erW8Tij/53443427955.pdfIn PDF document text
    • http://lighttravel-ng.com/26936930771o8bvt.pdfIn PDF document text
    • http://sberpodarok2020.online/compuestos_aromaticos_definicionil4n9.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwonukunav/hhlShiB/boombs_bricks_breaker_2018_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496812/normal_602aec39efff3.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/heeajfI/lego_hidden_side_app_tablet.pdfIn PDF document text
    • https://binemipo.weebly.com/uploads/1/3/0/8/130874238/667034.pdfIn PDF document text
    • https://cdn.sqhk.co/vurikede/e5Bhido/guess_the_hollywood_actor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://newurefaz.epizy.com/11512856899.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_off0000d84e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD84E 5080 bytes
SHA-256: 59d90541358dc118802b0c7a139c5ebe04a55e27e0bdc00318c0cf3f91619311
font_01_sfnt_off0000e994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE994 10824 bytes
SHA-256: 293088f632144cc586a96057da2b15990ffd0b8eedeb818891c5bef8360db55d