Malicious PDF — malware analysis report

Static analysis result for SHA-256 12c4c5a0caf4f24d…

MALICIOUS

PDF

79.0 KB Created: 2021-04-06 08:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0e4c55c5f1040964c29c23afa5131e92 SHA-1: 57ae6a41dde4508dd3f0b94cfc7d0873d11d0aea SHA-256: 12c4c5a0caf4f24d872e51f810f1cb2518c74d4df8f8eb74c1af097b508941cd
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://yafferge.ru/123?utm_term=aagadu+video+songs+telugu In PDF document text
    • https://ramowofotaro.weebly.com/uploads/1/3/1/6/131607053/4a2648d.pdfIn PDF document text
    • http://loginwithfb.site/vodixoxafurivajubu389.pdfIn PDF document text
    • http://lestyprin.online/kewesobeligavizewidol0ku5y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485149/normal_6019075a750f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484639/normal_603304da3f0ff.pdfIn PDF document text
    • https://sakuvajavabese.weebly.com/uploads/1/3/1/3/131383602/6655559.pdfIn PDF document text
    • https://suvenalopevoku.weebly.com/uploads/1/3/4/5/134510495/57af98e0e32543f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477164/normal_5fc9c2d52b7ab.pdfIn PDF document text
    • http://daliadiago.com/jamiwina7xfoi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_6046ef69dee26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388276/normal_6019bad46d647.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405674/normal_5fcaceb7e6b5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wajibile/81906100496.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/addition_up_to_10000_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fbae866-4878-497c-8ae2-5dd3865412ce/41908662310.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/rugenixuzug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1d28ae2-85b9-4f18-8e01-f2a71dfca70d/53935365074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc1cf04-0606-49a6-8306-f894d65df27e/41933000635.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/xonovogewaxufu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C6 4828 bytes
SHA-256: 04362a48d1bccd4c21738c09f84e6233c9de3f0b8090d4c7c85ea894a0e2f267
font_01_sfnt_off0000f942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF942 11716 bytes
SHA-256: a497d833ca3866548f82870a0b69b2432580cd6e9eb28cfe28d93e44d4ee9211
font_02_sfnt_off000120cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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