Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9729169572788e…

MALICIOUS

PDF

70.0 KB Created: 2021-02-21 12:11:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9316be36107e571f5f689ee5d262015c SHA-1: 608e6f54a088aefe741bc9b4d461b9ef9a1fa46f SHA-256: eb9729169572788e6c8e7c9af480dc4516992b5071c9f734cc48a1d06045a7bc
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wix?keyword=turtle+beach+xp+300+manual In PDF document text
    • https://xizuxikeg.weebly.com/uploads/1/3/0/7/130740292/zidipexukufu_vidokuvugo.pdfIn PDF document text
    • https://xufodikufidu.weebly.com/uploads/1/3/5/3/135382923/tedozemigap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369917/normal_5fdeedcfd723a.pdfIn PDF document text
    • https://gajegebukorivip.weebly.com/uploads/1/3/4/4/134487765/f1966f43b211f2f.pdfIn PDF document text
    • https://cdn.sqhk.co/redusebi/jhhZnic/jopus.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/dYhg8cP/pictures_1_to_100_in_english.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/zakibufunadaror-jesakodaj.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/MvMiejd/6319456415.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/ZUjcXjh/31809694859.pdfIn PDF document text
    • https://cdn.sqhk.co/delinilipo/fgimvgh/20180148240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489725/normal_5fd2fa604de72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369161/normal_5fffaec43d822.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/hOnUjhk/92148864721.pdfIn PDF document text
    • https://kabuxezalexafa.weebly.com/uploads/1/3/0/8/130814122/31165af4d772c.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/kegubinefuda/jopixizinemaxowal.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/competency_framework_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/kshb_news_reporters.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_off0000d600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD600 5456 bytes
SHA-256: 6b1ef9ab4cfb233cdf92b3dd98b2ead55b2cd31850adbd393ba8326ba9f28bd1
font_01_sfnt_off0000e864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE864 10260 bytes
SHA-256: 5f2b23aa6cb1458281003d07493d983b69d8a74fda2abc7b3c888e0d00c7db5d

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