Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf1adf497a1f809…

MALICIOUS

PDF

72.8 KB Created: 2021-02-10 17:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 84d757bdb89de881edbc29b9da7eaea8 SHA-1: 564ae1a02fe66a2f2cebc0d52e7365a06b087ada SHA-256: acf1adf497a1f809edfb37532b64536d90109aba55548cd0be4a12196eee42b4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to S3 buckets and other domains, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://druttle.ru/aws?utm_term=doraemon+movie+video+song', is presented in a way that mimics search results, likely to trick users into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://druttle.ru/aws?utm_term=doraemon+movie+video+song PDF link annotation
    • https://zepigebilotexo.weebly.com/uploads/1/3/0/7/130739401/ximokiburamovib.pdfIn PDF document text
    • https://vusejamujaled.weebly.com/uploads/1/3/1/4/131437056/tafajapuzix.pdfIn PDF document text
    • http://zaliv2k20wowowowoow.xyz/avon_her_story_reviewfjv48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456666/normal_5ff6107a85b55.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/jbm0Peh/ates_ve_su_6_indir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385198/normal_5fc6033c5627e.pdfIn PDF document text
    • http://s7hmus.org/nexajibazonutigozewazasuppzyf.pdfIn PDF document text
    • http://rocketdocs.us/wodanubuwodoroxuvr0hk6.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/8khiBEt/91302103939.pdfIn PDF document text
    • https://cdn.sqhk.co/jizuxadif/dfjiYif/wipigizunilubokutoxab.pdfIn PDF document text
    • http://xxlmature.site/maril11sou.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/bomupi/you_re_so_vain_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/89042733826.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/spongebob_mock_meme_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/acknowledgement_internship_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/local_weather_charleston_sc_hourly_report.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/bhakti_sangeet_song.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_off0000df4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4B 5172 bytes
SHA-256: a0681182ee7b01e0af9daddfe3bed791c810cb97902b20ae858239b2b5c13100
font_01_sfnt_off0000f0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D8 11072 bytes
SHA-256: bdbc2f16e0915f089c1a4d85fd5dfd9e89bb6325d821a48b58ad0fec94722b20

Open this report in the interactive analyzer, or submit your own file for analysis.