Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e35ac22fb1fa797…

MALICIOUS

PDF

72.1 KB Created: 2021-02-11 10:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 99fdf37e24d3147370725a677d7ceb9c SHA-1: 99aa2f74f37a383df5644311b792e99865b341c7 SHA-256: 1e35ac22fb1fa7976df6b8600c280fe7d6bb900aaec4459b1110dedb33bbc1cf
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/aws?utm_term=angular+material+form+field+100+width PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467306/normal_5fdea0e236e06.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/ahghege/munimobile_app_san_francisco.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe05ceaa09c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378155/normal_5fcd012c3e420.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449783/normal_5fe178c4b3940.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/ZQThjfQ/melabejofiwutakitej.pdfIn PDF document text
    • http://onesmall.space/didache_bible_ebook7bymt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377697/normal_6018cb01405b6.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/lvjcifC/nebaweronuzitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_5fd90719eaa8d.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/hbpVidD/pazibomavozerixiripe.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/zinudipir/88227643680.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/dotof.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/menu_layout_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/54351394528.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_off0000d10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10A 5416 bytes
SHA-256: 5866be58acdbd2d3dd6935666a35fde098962b56c84941a57636e13c0537df3b
font_01_sfnt_off0000e364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE364 15284 bytes
SHA-256: c43235cd148a278a13cc513596cba81fe1c44daf8fe461077da567d313be940e