Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f2867b34ccf634…

MALICIOUS

PDF

77.8 KB Created: 2021-02-16 01:41:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d2e7b198677773e3a9508ac2fcee7ef0 SHA-1: 8c882b88e7d4cf564eeae840e88c73eb8d74e193 SHA-256: 03f2867b34ccf634dd8ed9f6746ab98d692893a989db55275bef5462959baa9a
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 of which are embedded within the document body, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs point to potentially malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wb?keyword=what%20cancer%20causes%20hot%20flashes PDF link annotation
    • https://cdn.sqhk.co/milibotobov/Dij1jdJ/word_jumble_answers_12_12_19.pdfIn PDF document text
    • http://3-bureaureport.info/slang_words_in_english_with_meaningqzvvb.pdfIn PDF document text
    • http://knitfqph.site/widirimexb3ybh.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/Ejehfjb/wajozaraxo.pdfIn PDF document text
    • https://cdn.sqhk.co/rijakobebux/iegiPje/4024153545.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/pejibelidibixe.pdfIn PDF document text
    • https://cdn.sqhk.co/nazabimon/jh1jbTN/map_of_ukraine_with_cities_and_towns.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/jac1SGv/funny_mario_animations_clean.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/Uhjsegg/loona_odd_eye_circle_girl_front_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/diCfjdr/shogun_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/j6jjFgf/55171615108.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/OPIijva/19445600237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dimazobuxijema.epizy.com/zabolejasewigudutu.pdfIn PDF document text
    • http://bevowamudad.epizy.com/2017_maserati_ghibli_s_q4_performance.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_off0000f46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46A 4980 bytes
SHA-256: e970b5a49e01121cf3fdea3a64b99d9ac4c604c63463ead85d1a7bea79a6f699
font_01_sfnt_off00010564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10564 10780 bytes
SHA-256: 7dcca740787762129b505976c47ab1df680cb48476df6bc59d1e5ee32b8920ba

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