Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5e515e8061b02b…

MALICIOUS

PDF

73.6 KB Created: 2020-12-20 13:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 94629d1a68f6e77447d3ba15ee318a81 SHA-1: 17c1c1e2f28960c3b85215983c12c861c98ccc3b SHA-256: da5e515e8061b02b4a0b8dea6cc108a9713012e4b275aa9cd3829203e7889236
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple critical heuristics as malicious, including a redirector link and a link farm. The embedded links, such as 'https://ggtraff.ru/strik?utm_term=kodi+apk+15.2+android', suggest an attempt to direct users to potentially harmful content. The presence of numerous external links indicates a strategy to distribute or redirect traffic to other malicious sites.

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.
  • 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.
  • 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://ggtraff.ru/strik?utm_term=kodi+apk+15.2+android In PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/590dca23e2837.pdfIn PDF document text
    • https://regumalewa.weebly.com/uploads/1/3/4/6/134694163/virewaloj_dugotesisefaj_debebedu_bodivikiweno.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/molarozo_titexiduziw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6161ab0-b09b-43ac-849b-64b20c16e398/pejumefawefo.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/nccn_guidelines_for_patients_lung_cancer_screening.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc501b17d0c8f249d5b4547/t/5fc8ef534fb67167f68db641/1607003988372/84157433481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2541df61-9c13-4bb4-b0dc-455333a5400d/62040230914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20d44c11-fde5-4077-88cc-ec51dff7b411/dna_transcription_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/328ed4a7-4913-4cc7-b1dc-6606fc14568b/mini_30_rifle_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179644d2-bf68-4bfd-b08a-2973713fa12b/telemecanique_catalogo_sensores.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/jokanakapimesoxizon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d478c145-2bae-4140-87d1-c179bf8390a8/3527935553.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/case_interview_frameworks_a_comprehensive_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/avadhuta_gita_espaol.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2b2255b18a2b82c09c96/t/5fdd5f29892c8943b095af6e/1608343342466/zovisitanataj.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_off0000e263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE263 5116 bytes
SHA-256: e263c98a5e47c8d51131e6a18149221ff44c293775a416afb8db6b5b8fdb235f
font_01_sfnt_off0000f3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E7 10984 bytes
SHA-256: eab3ed42de0e193dc83ac1d5f7a9db4577a6c4094273b381eeee352f4134e7f3

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